Malicious PDF — malware analysis report

Static analysis result for SHA-256 80244cbe78ff0819…

MALICIOUS

PDF

109.1 KB Created: 2021-03-18 09:29:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8c77b7ff945d2a0e66b5b12416523738 SHA-1: 211316f5d2dcc7736b8ea8939ac64e1a69929f4e SHA-256: 80244cbe78ff08198ec8b87e380bc1045f97de83b864f6439acf51faeb9644a8
146 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. The presence of numerous external URIs, many hosted on disposable domains, suggests a link farm designed to redirect users to malicious content. The 'SE_ENABLE_LURE' heuristic indicates the document likely contains instructions to enable macros or editing, a common tactic for malware droppers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://golowaki.ru/strik?utm_term=arcane+power+toep+macro PDF link annotation
    • https://wipibafupegivu.weebly.com/uploads/1/3/4/8/134868488/sarixirizobaj.pdfIn PDF document text
    • https://wofinomedek.weebly.com/uploads/1/3/4/1/134108675/9030395.pdfIn PDF document text
    • http://okclub.org/debits_and_credits_in_accounting_cheat_sheetk399k.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/9849682.pdfIn PDF document text
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/mutevabifet.pdfIn PDF document text
    • http://9gusevshop.website/essay_answer_sheet_of_upsc_topperscugxt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409110/normal_5fe17a5545d86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_60155a2c375d2.pdfIn PDF document text
    • http://vimoroketoburiv.22web.org/albendazole_vs_mebendazole.pdfIn PDF document text
    • http://mebets.xyz/what_is_the_4th_industrial_revolutionq86lo.pdfIn PDF document text
    • http://afracheat5.xyz/96665844973nkk9g.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/how_to_pair_logitech_unifying_receiver_without_software.pdfIn PDF document text
    • http://lewijufe.sportsontheweb.net/almanach_tajemna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450509/normal_602a75a154d72.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/20437740228.pdfIn PDF document text
    • https://jerigarapo.weebly.com/uploads/1/3/5/3/135327201/xakajekasili-zodugogoba-rologula-merejetetutaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24d3e60-4db1-43ba-898d-c729c9ff89de/7746955300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d84083-61f2-431e-ac7a-845a1b3af0d0/79552793879.pdfIn PDF document text
    • http://bemujamo.rf.gd/anticorpos_antinucleares.pdfIn PDF document text
    • http://biburusig.myartsonline.com/60869735426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d11a9af-ede6-4f3b-99e4-f9776c4b2f47/ipod_nano_6th_generation_does_not_turn_on.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_off00016dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DBA 4952 bytes
SHA-256: f56d0086080c3697f7385761b063c2e21ea983bf37e925e870441bab172c3428
font_01_sfnt_off00017e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E8F 11760 bytes
SHA-256: 2104125d4cb2db600c225945de65ed7eda33cc7aca25d01013c61849aad6b781

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