Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eaab442f85f1700…

MALICIOUS

PDF

81.9 KB Created: 2021-03-05 22:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c43edb847bee3860a29e1c8a679c8e3f SHA-1: 2fcc98344ff5e709fabc8eb41127f99f48cbe1c8 SHA-256: 2eaab442f85f17006e968e655242ccd5686f8137a778da05722fe28ab65c1a12
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting it is part of a link farm or designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains metadata related to its creation, but no direct instructions or lures are discernible. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/strik?utm_term=morning+mood+song+in+movies PDF link annotation
    • https://nebemono.weebly.com/uploads/1/3/4/3/134331812/fewunigokogejiwija.pdfIn PDF document text
    • http://naxovonukile.iblogger.org/how_to_keep_flesh_eating_beetles.pdfIn PDF document text
    • https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/sinol-bugizelotud.pdfIn PDF document text
    • http://zarozunaxa.iblogger.org/76587798300.pdfIn PDF document text
    • https://joxureduragup.weebly.com/uploads/1/3/0/8/130874613/2bec3edae8b3.pdfIn PDF document text
    • https://zinegekoxemajaj.weebly.com/uploads/1/3/4/7/134767253/gimiwevejis-pusoja-kawek.pdfIn PDF document text
    • https://fitovixuzo.weebly.com/uploads/1/3/1/3/131380078/lubovipa-bugiwulovatora-mixofop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fuxurekosorozu.rf.gd/how_to_make_a_cape_out_of_a_bed_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/kilemimawu.pdfIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_2cbce744242641dc9a0f848176e1d5ad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dixaleko/piwub.pdfIn PDF document text
    • http://favirivesez.epizy.com/wipepa.pdfIn PDF document text
    • https://34ea5197-a9e9-4ba5-99bb-a7dd7aeba98b.filesusr.com/ugd/234f58_87fc374e0e024fb48360cc55153cef6b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefadep/52018110165.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/rubekapabinisusi.pdfIn PDF document text
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_a5775ab819494c02a7eac7abfd2b82af.pdf?index=trueIn PDF document text
    • http://tafupudininidag.rf.gd/bir_form_2306_guidelines_and_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/on_eagle_s_wings_music_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/mezagizuxefujes.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/management_accounting_reports_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/atv31_user_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52B 4676 bytes
SHA-256: 7f9b512bec44b35ace3b7fb03b1d72a723b09f02a31cd5d25546b649ec00bda3
font_01_sfnt_off000104f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F7 11900 bytes
SHA-256: 3c5e085ff05098d0ef48157908c0b9c879c5e6e3860c6679e7566b1a9f935918
font_02_sfnt_off00012c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C3C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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