Malicious PDF — malware analysis report

Static analysis result for SHA-256 3196ceef9b6d4430…

MALICIOUS

PDF

86.3 KB Created: 2021-03-18 01:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 83469d5c26c83d22ff702ef0371cdbe3 SHA-1: 6083bf088abd4c30e614ee135387412ce0bc9386 SHA-256: 3196ceef9b6d44303e678cf8295e90fbf72852b13defa8b380f8bff108ae5803
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable or unknown domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain metadata related to label maker instructions, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=p+touch+label+maker+instructions+pt-2030 PDF link annotation
    • http://vomojagibolib.iblogger.org/which_domain_is_best_for_business.pdfIn PDF document text
    • http://lutefadeba.scienceontheweb.net/dumozamopedarolago.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/32476194310.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/itunes_hip_hop_charts_top_100.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/goxalitofagavuxi.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/govojizuvova.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/p_b_shelley_ode_to_the_west_wind.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2eeb51df-07ba-4372-80d9-1ef4646fc7f7.filesusr.com/ugd/6af210_055a9f90fb024f77a371ab08923a8146.pdf?index=trueIn PDF document text
    • http://gafigap.epizy.com/dozexomap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8f12f6-3c1f-4cf5-a0d2-a0d8f2298890/hitachi_c10fsh_parts.pdfIn PDF document text
    • https://d190c387-1498-4382-a59e-98d1a0a9794c.filesusr.com/ugd/a91264_c21536ce920547aea843a831cc1ddad3.pdf?index=trueIn PDF document text
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_a4adfa50ec564ef18307bb43eb562b39.pdf?index=trueIn PDF document text
    • http://zitasixan.atwebpages.com/nofodefividibaduwuwoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3bb946a-faa1-4289-a176-060c14b7afea/char_broil_electric_smoker_ribs_recipe.pdfIn PDF document text
    • https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_40e112e5bac44d8094e3c0de9e3c1b9f.pdf?index=trueIn PDF document text
    • http://luzigipo.epizy.com/private_fishing_guide_south_padre_island.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/merawurosamalufowebexuwo.pdfIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_f181304094744640ba26ea33bf834736.pdf?index=trueIn PDF document text
    • http://barirenuvekesup.epizy.com/mefibifazanape.pdfIn PDF document text
    • http://vubenotabajumem.epizy.com/49666977446.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_off00010e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9F 5848 bytes
SHA-256: fc29eae3571c130e92edc16f293f77b6450a5651b5ed64b5107f88f246df3b94
font_01_sfnt_off00012256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12256 11764 bytes
SHA-256: ea91d9038a914934f52c3748aa379176f9ad2dbb84126efac493fd472973fc3a

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