Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e7d2cf62eb92c9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-07 05:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f9a4167efd291e81458f1293855d89d4 SHA-1: 21117b7d174ef7d6c4e8e2baf63953d5c49f9361 SHA-256: 67e7d2cf62eb92c965efafd90fed94ad4c94ec5612f33f81ee0e77a99ae2bd77
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a "Crime Stoppers Waterloo" lure in the document body, combined with the ML classifier and ClamAV detections, strongly indicates a phishing or malware distribution attempt. No scripts were extracted, but the extensive link farm points to an attempt to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://bologen.ru/123?utm_term=crime+stoppers+waterloo PDF link annotation
    • https://wafilanukeg.weebly.com/uploads/1/3/5/3/135309269/kinesisitulixi_nebumas_jugifozililowem.pdfIn PDF document text
    • https://gonuvogizup.weebly.com/uploads/1/3/1/8/131857562/9965770.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/cghhb8Z/xufuxatuwov.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/zusumibilezux.pdfIn PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/17b1d0a502af0e7.pdfIn PDF document text
    • https://kifikutomile.weebly.com/uploads/1/3/0/7/130776046/zagapugolidozas_sijejes_zonagajabozezil.pdfIn PDF document text
    • https://bosijoputa.weebly.com/uploads/1/3/4/3/134317673/e926f3f892283.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/a3SBic5/ark_survival_evolved_ps4_gameplay_no_commentary.pdfIn PDF document text
    • https://dufofumiwiz.weebly.com/uploads/1/3/5/3/135309849/8302817.pdfIn PDF document text
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/6697155.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/bhgddhe/nogijot.pdfIn PDF document text
    • https://xupodidif.weebly.com/uploads/1/3/0/7/130739682/xusarev.pdfIn PDF document text
    • https://cdn.sqhk.co/mupalewefe/d4p03qn/zatebawusinezimumejob.pdfIn PDF document text
    • https://pejagefetem.weebly.com/uploads/1/3/0/8/130815482/92f530fdd982610.pdfIn PDF document text
    • https://cdn.sqhk.co/fanoxozowupe/jcDGie4/social_media_dashboard_application.pdfIn PDF document text
    • https://zuripuwa.weebly.com/uploads/1/3/2/7/132740693/pukulasomuki-vivoxaja-lebamemapexufo.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/rozebofukixus/bypass_google_account_android_keyboard_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/18660388423.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_off0000d802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD802 4964 bytes
SHA-256: 3cbd20714fa08b2e83973929c9ef04c0873f7356579c010d31cf1914e24851bf
font_01_sfnt_off0000e8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D9 11252 bytes
SHA-256: 2516df74063a15bdf08ad5b1ac0e5a6967d0efb98675987c7ae26d8db416b358

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