Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabd6534fcc78791…

MALICIOUS

PDF

81.5 KB Created: 2021-09-02 10:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 75ecb874df18357023e19fcdc3176669 SHA-1: 040c1ce0c99e4943aae601f0b1ba97a4d16487e4 SHA-256: aabd6534fcc7879114b281c64ebf284a26c8b511a4409a322f8892ef20b2083a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The document contains numerous embedded URLs, many of which point to compromised websites or link farms, suggesting an intent to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • 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.
  • 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://philabc.ru/uplcv?utm_term=does+tea+go+bad+if+left+out PDF link annotation
    • https://www.naabelectric.com/userfiles/files/jiwonumomufexoxibebonu.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/f01ed1633e4ca905f2d71b85f2e8fc85/74859813741.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/kozewire.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/24610106477.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/91b05ce1030937d40ac51ddd96563a70/digafizasefugidasamibepet.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/7gvpnecanhnfqja5osvegvb6vf/xigifikefigemowiwiv.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/e440364fc3f215c2f5a233b894659490/49733361683.pdfIn PDF document text
    • https://omprintandpack.com/userfiles/file/vesenul.pdfIn PDF document text
    • https://rewaqousha.net/userfiles/files/beriwivujoto.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16070bd426f643---fokagewifibid.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/86615527920.pdfIn PDF document text
    • http://xn--o79av69abka850ab6c.com/upload/file/202107301015306065.pdfIn PDF document text
    • http://edu-tur.ru/userfiles/file/96853902431.pdfIn PDF document text
    • http://cga82.com/admin/File/9539976037.pdfIn PDF document text
    • http://jkohut.pl/file/81476588839.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/zowovelamimonugeropulomum.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/2i2u2bpaktlueslat9usb484pt/5836292031.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/84cdbvhte91hei30g10blvfpum/65118240347.pdfIn PDF document text
    • http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/gokodewo.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/76475057941.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2021/08/file/79171286718.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/c97pq3ah9vo5ujq3g6v8fgo9co/63655377885.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/pitisopidefilutasigalo.pdfIn PDF document text
    • http://eventechsite.com/files/files/91905481767.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_off0000db16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB16 17296 bytes
SHA-256: 680b302c415e27514899332788854e8fc7dcb43938528f40e4bd132a7bac1b9c
font_01_sfnt_off00010785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10785 10564 bytes
SHA-256: f6e113cf589e9a6ffee61253b3c6750c7d4a228873d5ddfc3cd2e276f99bbfaa
font_02_sfnt_off00011f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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