Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2c87bc82b76b3cc…

MALICIOUS

PDF

88.3 KB Created: 2021-06-28 17:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5f70a742d412fbf5d7b4caefe5a00133 SHA-1: f5609db6143d5caf6cfa767841b1ac5d0031147e SHA-256: a2c87bc82b76b3cc55b4c2267a6ba4bbc5fb1488c20dc090ce132ba5eb92df44
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm designed to distribute malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern. ClamAV detection and ML classification confirm the malicious nature of the file, likely serving as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=baaghi+3+full+movie+with+english+subtitles PDF link annotation
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d634f5c1715---nelufofoza.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a79439c83---52041815529.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/4q5fl6og06naapbrtvffiqf5uc/65739970982.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cecb15ed3d8---metabozaj.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083cd6485721---kodovosiro.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072003f23e25---bezovidulu.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/2570f85d8e9c4597186c5f558a4362f8/28685639707.pdfIn PDF document text
    • http://short-story.ru/upload/file/zirawowelarevugux.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/8956d58d33b9c6007edd6b1019d884c6/zozitefokupolibepe.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b62dd6311e5---98439377909.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/fd6288bc2eea35b1fd7c87126b5e3d28/58569824933.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/9584d061c12b892fc7edf65403b93a4b/33950357244.pdfIn PDF document text
    • https://goodline.by/userfiles/file/92736724051.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/vpeakiiq2p78j48ggbop6be990/34872742447.pdfIn PDF document text
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1c5174509---xaziwefubagaselowulules.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5aa9a8e1bd77e431f7f4cbfb29ac7bb3/16506490920.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/033b372f242956e8087c340cceba2d27/24946480709.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aeac64c8d59---25250559794.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/39923582255.pdfIn PDF document text
    • http://sushi-belovo.ru/files/3378117781.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/gc7l4hble4f5fn90mer1255a8o/94449895571.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a138abbbfbd---tebizifixagivaruxudizenud.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/66847755601.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4a9767903---wider.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/nofidolomotivabuzemaxo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33D 11180 bytes
SHA-256: f5f576cb2be98c8458e19b7f43f86e0a8ccc993d0511bb97d27fef68022d4543
font_01_sfnt_off00010d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D57 17548 bytes
SHA-256: afa6887af3f9b54b95109759a1040826d14a612de61e8e378e7badca596581d3
font_02_sfnt_off00013b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.