Malicious PDF — malware analysis report

Static analysis result for SHA-256 3102f1acd46084c1…

MALICIOUS

PDF

66.4 KB Created: 2020-12-24 00:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ccb0db4cfcce78b56da659ac4dea3600 SHA-1: bf54bf961f837451c91f59fb917a161c0f8b6e14 SHA-256: 3102f1acd46084c1988a152d117574eb41ddfe66aa42d68031d3bf4bd9d47feb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm designed to obscure malicious activity. One prominent URL, 'https://traffking.ru/strik?utm_term=orange+parachute+cord+for+sale', is directly embedded and appears to be a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffking.ru/strik?utm_term=orange+parachute+cord+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f9f5840a2a84.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/gidonef.pdfIn PDF document text
    • https://cdn.sqhk.co/jagavibejabe/0iiuBni/jagato.pdfIn PDF document text
    • https://xuxoxipabixu.weebly.com/uploads/1/3/4/5/134588436/vinibakekutit.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
    • https://uploads.strikinglycdn.com/files/51dd04bc-0f2e-44dc-852f-2231ac9e8cb1/rojazusemarukanimodet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba9e652-59db-41f6-807a-330a1eb23e64/vositeki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90cc520e-d8f3-4e4e-852b-c21c72e44053/music_player_bass_booster_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a467b7-3e00-4195-a779-38e75f3e53b5/jackson_hole_weather_forecast_noaa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e52b72d-1a02-4a96-b406-6b887116db46/murajopukipozo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/bds_full_form_in_medical.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_off0000b56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56B 5280 bytes
SHA-256: e369989286fbdf8e5593fa2c16ec9aa8ca4b32e1d28ac442b8d446ec5ac78a4b
font_01_sfnt_off0000c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC757 11524 bytes
SHA-256: 61ef14f8756b4139874a21e06e021f8cfe4a9cb3c8f4340bea221f98ed678c09
font_02_sfnt_off0000ee79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE79 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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