Malicious PDF — malware analysis report

Static analysis result for SHA-256 7313ee46946747f7…

MALICIOUS

PDF

72.2 KB Created: 2021-03-16 22:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3a3e0f3263bf61270f61b275229f5b19 SHA-1: 20770a7ed45f1cc5d2f10ac3f53a172806b6e175 SHA-256: 7313ee46946747f778423b0d4e603352937804fa6503a010e283c5acf8610392
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains metadata related to a 'study bible' which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://gimoguvi.ru/strik?utm_term=holman+rainbow+study+bible+niv+edition+leathertouch+hardcover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393889/normal_601e80384b303.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/hhhoByd/gorasujazirepaleduzanufep.pdfIn PDF document text
    • http://dutov.org/serozinima96sny.pdfIn PDF document text
    • http://dokumenty-kiev.online/62153532616q7ro7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fe3fc3d06d91.pdfIn PDF document text
    • http://myfavoritesun.xyz/hindi_tayo_pwede_piano_sheet_music9pd4w.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/ajfz9gh/86864872929.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/wojemegijus557f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477155/normal_6012199997635.pdfIn PDF document text
    • https://cdn.sqhk.co/zanewijepex/lr8ieQo/64908502982.pdfIn PDF document text
    • http://natlab.ru/how_to_read_couples_body_language_in_pictures1lt4p.pdfIn PDF document text
    • http://gabubixaj.22web.org/coreldraw_portable_untuk_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389355/normal_600da06e59cef.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/hfmhdUy/10894464006.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/jhgpghQ/juventus_vs_barcelona_next_match.pdfIn PDF document text
    • http://fapuditutatinu.iblogger.org/how_much_pollution_does_the_us_military_produce.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/how_to_move_your_head_to_get_rid_of_vertigo8e8zg.pdfIn PDF document text
    • http://esclick.pro/medicare_part_b_enrollment_employer_formbnier.pdfIn PDF document text
    • http://lightly.store/768703316512f1we.pdfIn PDF document text
    • http://mexicotop.xyz/dumosebixizuwonenajx0fc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_60119f84e251e.pdfIn PDF document text
    • http://politach.com/kifegaze8ge2d.pdfIn PDF document text
    • http://nukadaz.iblogger.org/bereavement_definition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wumikexenuge.epizy.com/peavey_bandit_112_transtube_specs.pdfIn PDF document text
    • http://lufubafuma.epizy.com/18236881845.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF3 5536 bytes
SHA-256: 4fdcf7f2f70011c7548a797808a070d02c5a20296197be575a8d3aa2307c7bcd
font_01_sfnt_off0000eea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA7 10488 bytes
SHA-256: 26766c9f2fe2632272d5c4303e0ca6aea4785feec40603141c1da3d9186809ba

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