Malicious PDF — malware analysis report

Static analysis result for SHA-256 803a6374ac518b10…

MALICIOUS

PDF

72.0 KB Created: 2021-03-17 14:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fd92a2a0e9cc1057b2ab679e80188fcd SHA-1: 373a04541bddc23da9c64e4ab0b3a3d12ded201a SHA-256: 803a6374ac518b105d0cc811cea79b48d1e22aefbb68a0b87bf3680049bd8f19
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The embedded URL 'https://jacksth.ru/strik?utm_term=fl+studio+12+free+trap+plugins' suggests a potential phishing or malicious redirection attempt, possibly disguised as software or plugin downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=fl+studio+12+free+trap+plugins PDF link annotation
    • https://cdn.sqhk.co/bojidokagivi/ejhhcIH/harvest_moon_gameboy.pdfIn PDF document text
    • http://xurekovof.22web.org/world_airport_codes_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_601d2442a0ce4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451023/normal_6030a7b157823.pdfIn PDF document text
    • https://cdn.sqhk.co/guxuboru/Chigew4/tepagumagiseput.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/jixerubowi/piberonaremavavovo.pdfIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_db084bf3bbbf49f7a1076f0596a1c026.pdf?index=trueIn PDF document text
    • https://d5aacb37-8766-4234-9cc8-c2ec3b911aba.filesusr.com/ugd/1e723b_4f175ab9375b42b89df23bb49e74659e.pdf?index=trueIn PDF document text
    • https://21036261-01f9-4725-a342-2b8b08d10099.filesusr.com/ugd/d0cbc4_574823a508cb4041b1aa0384827cef20.pdf?index=trueIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_3406657b1fcb41a1beca0a5263c6e99e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/how_do_you_fix_a_furnace_that_wont_start.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/husky_energy_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/star_wars_clarinet_sheet_music_beginner.pdfIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_454e3a01d259428583f4c69501d3f2d4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/fun_worksheets_for_advanced_esl_students.pdfIn PDF document text
    • http://digifasofow.rf.gd/all_i_asking_for_is_my_body.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/95460757418.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/99081256826.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_off0000dc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4F 5348 bytes
SHA-256: 6afd651a67bf7bbf58390b2f97f8534382b9b6117a8fb13374ba705753e10317
font_01_sfnt_off0000ee97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE97 10704 bytes
SHA-256: a712f5b401f2fcea56418bf015a2255abaa193e69a76c3017da15d9256e9a89e

Open this report in the interactive analyzer, or submit your own file for analysis.