Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aea776ba0c0cd96…

MALICIOUS

PDF

62.5 KB Created: 2021-09-10 05:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 67c2327f8e3fb184ef12f825f1522a53 SHA-1: 7b5740096247be655b75bf53895c73d7bb5b561c SHA-256: 7aea776ba0c0cd96a79881b6d9634f0cb38337af23222f3dc2c961f3d13166a0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs and heuristics indicate it functions as a link farm, likely directing users to phishing sites or malware downloads. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing and malware distribution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5156

Heuristics 5

  • 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
  • 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://smidgel.ru/uplcv?utm_term=how+to+download+siri+on+android+phone PDF link annotation
    • https://pasarant0g3l-turbo-h1t.com/contents/files/93670895921.pdfIn PDF document text
    • http://shengyaweb.com/uploadfile/file/2021091008443261.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/3fa724e7744519582e4de761983a9018/379349758.pdfIn PDF document text
    • http://kargo-box.com/uploads/files/5657869121.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021090709263873499.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/86463654400.pdfIn PDF document text
    • http://borneneskontor-landsforening.dk/userfiles/file/maruvijup.pdfIn PDF document text
    • http://telecycling.info/files/file/30399814899.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/c0f7682cd3fcd0b1780136cfb3a93bb9/kubodubirusifagowujenifi.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/16734400334.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/87056343697.pdfIn PDF document text
    • https://exlite.it/ckfinder/userfiles/files/5952575316.pdfIn PDF document text
    • http://gachtrangtritranvinhtin.com/gachtrangtritranvinhtin/Images_upload/files/30854648380.pdfIn PDF document text
    • http://dezmaster.com/userfiles/file/96907039125.pdfIn PDF document text
    • http://szigmetal.hu/editor_up/21877881372.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/53205125494.pdfIn PDF document text
    • http://ominocoibaffi.it/userfiles/files/26888923342.pdfIn PDF document text
    • http://ltmetal.com/userfiles/files/53700911368.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/julej.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613716bf38a61---rasekano.pdfIn PDF document text
    • https://www.xyoaa.org/sites/default/files/files/gatudugazu.pdfIn PDF document text
    • https://mygoaltv.com/ipp/images/uploads/files/86588630084.pdfIn PDF document text
    • http://shinhwajudan.com/userData/board/file/xakifo.pdfIn PDF document text
    • http://0vote.com/ckfinder/files/vibugevamazafa.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/82147572471.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB355 14424 bytes
SHA-256: 4b20055664c0cf8324cdc6d792b395cca0b42daec09efaf60df900cc781f0c4e
font_01_sfnt_off0000d72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72C 10568 bytes
SHA-256: 77badd041714c429004f1bb8b9483247ff7e5be74f2cd0322f3a1123fe01fd20

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