Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee6248ccafabb97…

MALICIOUS

PDF

94.5 KB Created: 2021-09-05 01:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 01e355a3d5b68c48a774f0ab8d9beb15 SHA-1: 54dc2975e0a355df4850f27148fdc0ceb709b833 SHA-256: 3ee6248ccafabb97f1e815889068d2c71cdd38ec0c21bf9ec106cf4404e4b8da
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Several heuristics point to the PDF being a link farm hosted on compromised or disposable domains, designed to redirect users to malicious content. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext, further reinforcing the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://dotacjedlaoze.pl/userfiles/file/beregafuxebilavotubogiket.pdf In PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160790fbbad044---polutire.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/feretafuxuvufalefada.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4b7d39aa5---78337790030.pdfIn PDF document text
    • https://dansobentre.net/uploads/file/57876471809.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/93aa3b8f21e40605dbad374a6fd097fb/bijixub.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/jaretisi.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/zifufikoxaw.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607af80a4042b---bujub.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608501d4cf920---76662400568.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160a851e95fb3c---fojojebejuxen.pdfIn PDF document text
    • http://hasanmasat.com/ckfinder/userfiles/files/89691673982.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612bca6ecc9ac---6558141388.pdfIn PDF document text
    • http://www.juniorcollege.cl/ckfinder/userfiles/files/50328679977.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/eae3518597ea6553c881eeea220dc2d9/sunemajitomeneveg.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/th0ur16s724d699ur466iuh780/molofuduwukujibuwebubi.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160908ec52dfd3---sinalo.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772f223554f---33237364759.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f016196723a---33212979123.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/05dca562b0dafbff1a112b41323c25e0/6042477879.pdfIn PDF document text
    • http://premo.at/userfiles/file/90869031564.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/q0vvlhtt0nks23tv3mdp0jq1q3/vugasexaligoreniwebexasoz.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/344e59685c0e552b86eff9c35e02aa5c/dagikikusifakotimibiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=2019+calendar+week+wise+pdfPDF 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_off000106f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F09 19596 bytes
SHA-256: ee9b8a83217dcbeca9e563f9aec59a6ba7829b1c017797c6415277a3b8155684
font_02_sfnt_off000152d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152D9 10936 bytes
SHA-256: 6de8cb2cfa4f466ee9275d74df1b716618352158a5937487c110a8acde7c2423

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