Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d19968669bcb12…

MALICIOUS

PDF

82.8 KB Created: 2021-09-16 08:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0c20f04fb5da7fb2ec5c317962facfa0 SHA-1: d3bfd5d865a32eb697850de3a94f90391f66fdcb SHA-256: 60d19968669bcb12ad0bde037ce65b43ce7f3a6b9a4be475a0f28e7e3cbca671
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or are structured as link farms on disposable hosting. The primary attack pattern appears to be directing users to potentially malicious or phishing-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://hometeamcorp.com/images/usr/93777619659.pdf In PDF document text
    • https://healthmatters.me/userfiles/file/dabesetuzudib.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/surafezob.pdfIn PDF document text
    • http://airfa.it/userfiles/file/60258293725.pdfIn PDF document text
    • http://wellnesszeewolde.nl/site/data/ws/files/28944650885.pdfIn PDF document text
    • https://sealordhotels.com/ckfinder/userfiles/files/kekimotumazerepinimisa.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/xibupututaxaponetakup.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/161359787aebf0---8334770199.pdfIn PDF document text
    • http://dfanchem.com/upload/files/tatiburowukijalika.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/murowul.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/78360017477.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/2db00ecb121efcc491f3dd65613f5330/18018397843.pdfIn PDF document text
    • http://thebankcardservices.com/uploads/files/8694336436.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161324d15db90d---53194764954.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/38816622385.pdfIn PDF document text
    • https://volnynaklad.cz/data/file/40953612172.pdfIn PDF document text
    • http://bannermaul.com/userData/board/file/48227642170.pdfIn PDF document text
    • https://dichvuketoansg.com/luutru/files/39053721823.pdfIn PDF document text
    • https://polaria.cz/images/file/wedozin.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142ba34ea966---54195300339.pdfIn PDF document text
    • https://rzfmuhasebe.com/userfiles/file/81705271780.pdfIn PDF document text
    • http://secoinblock.com/upload/files/96178758382.pdfIn PDF document text
    • http://patanjali.zohukum.com/ckfinder/userfiles/files/52515707544.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f8543ea778---55136277298.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/vamonumupegot.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/99562401929.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/34n4bp1go5ek1bed455b0df7c4/solobemo.pdfIn PDF document text
    • http://linklandhotels.com/upfile/editor/files/goluwaxizefewowil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=increase+insta+followers+without+loginPDF link annotation
    • 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_off0000dfe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE7 17400 bytes
SHA-256: 670349866fc9f865fdd0ffb7e379aee66a5deccf432ec31f4c8970fe445c1273
font_01_sfnt_off00010c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C78 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001248f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1248F 10752 bytes
SHA-256: d240839e4b0cd2c21ab921131d1486cfbf2464d39f88c3907008017e9219e592

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