Malicious PDF — malware analysis report

Static analysis result for SHA-256 79032ebd58e2a3dc…

MALICIOUS

PDF

75.9 KB Created: 2021-02-22 05:09:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3e5e8dc1826a6bb45aa788f4433fcbf2 SHA-1: d9e6aed77dd37599265c6a62f19bd492bc67f530 SHA-256: 79032ebd58e2a3dcb1c68b41e105f72ee18511addc6c44de89853f2cb9582b4f
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

This PDF document is identified as a credential phishing lure impersonating UPS. It contains numerous embedded URLs pointing to disposable domains and link farms, designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to harvest user credentials through a fake login page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fatuzolawodazu.weebly.com/uploads/1/3/4/7/134730183/257bad.pdf.
  • 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 https://jottigo.ru/strik?utm_term=will+a+fully+unlocked+phone+work+with+straight+talk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427287/normal_5fda520f2949a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451565/normal_5fd3a7955efb0.pdfIn PDF document text
    • https://fatuzolawodazu.weebly.com/uploads/1/3/4/7/134730183/257bad.pdfIn PDF document text
    • http://lifeeuro.info/how_to_use_a_seamstress_sewing_machine_bobbinbtjos.pdfIn PDF document text
    • https://zipofero.weebly.com/uploads/1/3/3/9/133999904/fepizodoj_bubulamaxolim_nuwuw.pdfIn PDF document text
    • http://fruitnaturs.space/989905235763h76z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_601052655c669.pdfIn PDF document text
    • https://vatedubajepe.weebly.com/uploads/1/3/4/3/134371970/8468069.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/ihghgjs/airline_tycoon_2_mission_3.pdfIn PDF document text
    • http://respect-ltd.su/bridal_mehndi_design_video_mp47w495.pdfIn PDF document text
    • http://agreevudb.rest/basic_synonyms_intermediatevoodm.pdfIn PDF document text
    • http://hihikane.space/my_talking_panda_gamemlqqo.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/hdGgeKV/mystic_vale_nemesis_review.pdfIn PDF document text
    • https://wewuketis.weebly.com/uploads/1/3/5/3/135327502/danumisor.pdfIn PDF document text
    • http://invitesistem.ru/3691501312o7tvc.pdfIn PDF document text
    • http://afracheat8.xyz/the_maze_runner_book_series_reviewffpsn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5fe8ada1edf0a.pdfIn PDF document text
    • https://cdn.sqhk.co/gagowuname/ijjhgjc/dragon_warrior_4_weapons.pdfIn PDF document text
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/ziginunadigujef.pdfIn PDF document text
    • http://cmbmarketing.agency/mod_dragon_mania_unlimited_gemsdfrmx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE924 5688 bytes
SHA-256: f6ec41ec9ce7a718d10536482d7b49b6820fc4bcf1038fbf6022918838b12d7f
font_01_sfnt_off0000fca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA2 10968 bytes
SHA-256: f7c821c46d4a7a9355a98085b2acf71f76c1c665d866b9a7d902a0bd93c3b3b6