Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dabe9067608d0f2…

MALICIOUS

PDF

75.9 KB Created: 2021-04-05 10:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a500e440e97f9502fc70f21936615c2e SHA-1: 2c926dd9f44d22025bf66f3488800b7b07ef6c7e SHA-256: 0dabe9067608d0f286e38305874ed8daa1ae83349eeab948faddb3a040a5939c
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 high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, with one pointing to 'https://golowaki.ru/123?utm_term=oh+oh+arabic+song+ringtone'. This pattern is often used to manipulate search engine results or redirect users to phishing or malware distribution sites. No scripts were extracted, but the presence of numerous external links is a strong indicator of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=oh+oh+arabic+song+ringtone
    • https://cdn.sqhk.co/viwitukaz/p5yNlGH/fopavowivazasokulajepu.pdf
    • http://filebitikuj.iblogger.org/73077443147.pdf
    • https://cdn.sqhk.co/remimidotomi/uidngiW/e_wallet_meaning_in_kannada.pdf
    • https://cdn.sqhk.co/suxujaba/QXgjQjb/racing_wheel_gaming_chair.pdf
    • https://cdn.sqhk.co/zenetofuma/uje3igU/5842790054.pdf
    • https://cdn.sqhk.co/tegiriwepaj/fhdshf7/48824426256.pdf
    • https://static.s123-cdn-static.com/uploads/4473030/normal_5fe0243958d72.pdf
    • https://cdn-cms.f-static.net/uploads/4468289/normal_604cdf4039d3d.pdf
    • http://zuvabefip.22web.org/84614773269.pdf
    • https://cdn.sqhk.co/rujiwujik/fgiQSim/wd_my_cloud_home_duo_16tb_review.pdf
    • https://cdn-cms.f-static.net/uploads/4418558/normal_60563e21333d9.pdf
    • http://risurevisawibe.iblogger.org/l_arresto_di_arsenio_lupin.pdf
    • https://cdn.sqhk.co/fasotaluvose/SbjjJAA/tamil_love_romantic_cut_songs_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b03e51a8-7171-48c0-94d6-e4c032e6f37f.filesusr.com/ugd/9421c8_921e3a24ca2c4f42b61d1b271e4dbc40.pdf?index=true
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_3a0650042347498fbd6ca7e9f5dfb4c9.pdf?index=true
    • https://s3.amazonaws.com/lunojol/moto_g_2nd_gen_battery_price.pdf
    • https://2cfcb734-ec62-4cd9-b61c-03d4762ad765.filesusr.com/ugd/a891c0_9af8b174d42b4914ba577ebde415eecd.pdf?index=true
    • https://s3.amazonaws.com/gonasidupij/43401908156.pdf
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_6a3aca78815a430286c66e6e4cfe4e87.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebe4.bin
755e5a67b011808ee97e56c64551d03760ce19ab815880ff836ac1b03a40674b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE4 5196 bytes
font_01_sfnt_off0000fd83.bin
818222e9515b836ee042b2016af067569248e5e921dcd60299a275bf10d1984e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 11260 bytes

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