Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14879cad14f6a4d…

MALICIOUS

PDF

83.5 KB Created: 2021-05-25 01:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9c0b16e9eefb2a1ec9b9d5b50ee60c7a SHA-1: 882554e08c26dd10b75ef54449bd85a3b1421c73 SHA-256: c14879cad14f6a4d23fcac375db8d546e92479a8d406805bacf633f4a17f968e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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 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://gimoguvi.ru/strik?utm_term=coreldraw+x7+full+crack+kuyhaa PDF link annotation
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/xudatu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_6017024ed5dac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494661/normal_6001e7ce93d58.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/vodejawe-dexizeginogox.pdfIn PDF document text
    • https://fosakozetabu.weebly.com/uploads/1/3/1/4/131483491/zazen-fulokimifikam-nubunavi.pdfIn PDF document text
    • https://zekenegelu.weebly.com/uploads/1/3/4/3/134390475/aef805a79a57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486965/normal_60664173e1b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_603974ec11185.pdfIn PDF document text
    • https://medogizelolu.weebly.com/uploads/1/3/1/0/131070938/2923229.pdfIn PDF document text
    • https://didunomupipopad.weebly.com/uploads/1/3/1/4/131438203/revabideruzajuz.pdfIn PDF document text
    • https://ribofefafuf.weebly.com/uploads/1/3/4/7/134770843/3978336.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413223/normal_6018a1e2ed150.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zafirawit/14777298610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211f0718-416c-40ff-a32b-5226c838fcfe/bifox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e62fdb-d906-48b2-9827-2178a49d392d/vavuxewunu.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/craftsman_5.5_hp_24_front_tine_tiller_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/ak_47_kannada_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/sopusalabarikejik.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/how_to_avoid_huge_ships_alex_horne.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/46290935125.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/how_to_set_my_ww_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/american_buffalo_gold_proof_coin_value.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51660c61-7201-4aa7-a7b4-2a23ef07208c/14793748565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77cbef0a-d64f-4742-a820-27e4c0a832b6/fundamental_vs_technical_analysis_forex.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/vorubes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a60bab17-1212-442b-b0e0-7cc9e47b9b53/62617100991.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/jagubosuwakabu.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_off0000fb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7F 5240 bytes
SHA-256: 0206c2e10dbf093dfcea83b79a688dd3fd31bc499f3d3a35ef4796d416c51f7d
font_01_sfnt_off00010d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6E 22736 bytes
SHA-256: f5d6a373cefd620773fe37cf7634f764744d38ea6bd4f5d8c5c5bcf441b974dd

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