Malicious PDF — malware analysis report

Static analysis result for SHA-256 46bcf3b74241457d…

MALICIOUS

PDF

85.7 KB Created: 2021-07-13 23:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 299508694f488a478ae5182018200450 SHA-1: 46940cb53797200af17d98066e2a4afdc5c4db04 SHA-256: 46bcf3b74241457d08a53b9fc792a31b4906b81aae1688239b363184288a99ac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to compromised WordPress upload directories, indicating a link farm designed to host malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the nature of the links and the heuristic firings point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://irlanc.ru/uplcv?utm_term=counting+1+to+10+in+korean+language PDF link annotation
    • https://aprilboya.com/userfiles/file/12996648862.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/44817545207.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b18a9e2a751---42451579269.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/l3tnu7ckg8ffvt5mrb0iigs5h9/nameturovigapubupigoxipu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc735b731a---74673450112.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/da7074cb39098282b553b86ff15313d9/51432096002.pdfIn PDF document text
    • http://vintageguitar.ru/ckfinder/userfiles/files/17142614530.pdfIn PDF document text
    • https://zionapostolicministries.org/uploads/file/36651904453.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b767a6edb34---rimefinagaxepux.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/kifapidusigono.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8b0a80ac4---91423961809.pdfIn PDF document text
    • http://capital96.com/userfiles/file/20753881247.pdfIn PDF document text
    • http://rebornfair.com/FileData/ckfinder/files/20210608_F07D14DE8745691B.pdfIn PDF document text
    • https://ccskin.com/geektic/files/13833367745.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/gexubituvate.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a34bbde41---98803087809.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/530ffe886d13e12f9aa35b7a427a43b0/jutogowezigopo.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607df9cbc68d3---busal.pdfIn PDF document text
    • https://jurad.eu/files/file/38422390447.pdfIn PDF document text
    • http://lhsclassof68.com/clients/73441/File/4278886390.pdfIn PDF document text
    • http://dieta-plus.pl/userfiles/file/tadijog.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3c964ec80---tabex.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210505144555_256807637.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE254 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 17112 bytes
SHA-256: 158eaa40048ceae3a36fb4ff127f7a4f2065b85c58a7123d8d2389020208be5d
font_02_sfnt_off0001271f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1271F 1700 bytes
SHA-256: 15171638d69c9281a983de8a04f8d213e5ed86d33053034f6aa0dd130c4010d8
font_03_sfnt_off00012f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F37 10512 bytes
SHA-256: fc7cddb6aef22ba5886a1dce532a1a2899185084494107781b0dc23798291cea

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