Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2f2d02b953b879…

MALICIOUS

PDF

77.6 KB Created: 2021-02-28 06:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9f141ea5b04143314a839108edf417fe SHA-1: a3357390bf39d028ebe588ff1cd75981c7b51e80 SHA-256: 3d2f2d02b953b87944ff62291f6e92c4a411ffec85b0ba75e64c3cfcfd43a024
206 Risk Score

Malware Insights

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

This PDF document contains a high volume of external links, many pointing to disposable hosting, and includes a specific callback lure related to contacting Geico by phone. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or a scam operation. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites or initiate unwanted communications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/strik?utm_term=how+do+i+contact+geico+by+phone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5fe24791e5cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_603a74933430e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5feb863f2730b.pdfIn PDF document text
    • http://vifijes.22web.org/gukipemabuzasorako.pdfIn PDF document text
    • https://roxadaxakisa.weebly.com/uploads/1/3/1/4/131437443/nulowixosifebo.pdfIn PDF document text
    • https://zobuboralol.weebly.com/uploads/1/3/4/4/134487340/8283454.pdfIn PDF document text
    • http://golden-bridge.pro/when_can_you_get_your_drivers_permit_in_arkansaseesfj.pdfIn PDF document text
    • https://wejitefokok.weebly.com/uploads/1/3/1/1/131164199/ab7849cfe7003e4.pdfIn PDF document text
    • http://tryporte.xyz/new_york_drivers_license_renewal_extensionhi9gi.pdfIn PDF document text
    • https://lepatoketi.weebly.com/uploads/1/3/4/7/134732542/wukinakerawa-sexigoraferoze-gajudedat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416802/normal_5fca4dfe51c25.pdfIn PDF document text
    • http://jonusawa.iblogger.org/joindre_un_sur_messenger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475719/normal_60321d35c3e67.pdfIn PDF document text
    • https://tesafugefiwa.weebly.com/uploads/1/3/5/3/135318727/xerepijeli.pdfIn PDF document text
    • http://all-system7.xyz/91615522297e5u1k.pdfIn PDF document text
    • http://hookup153.site/12982203606vmd3y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455208/normal_60309eda885b9.pdfIn PDF document text
    • https://zememaxuzibur.weebly.com/uploads/1/3/5/3/135326459/bepezotamimasi.pdfIn PDF document text
    • http://godubumoze.iblogger.org/16062656008.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivokag.epizy.com/satelec_mini_led_light_guide.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_off0000f2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 5324 bytes
SHA-256: b1323573b95ced64963cd21d9be18d23ef266a0517571e89f50ca85ca509c346
font_01_sfnt_off00010523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 10660 bytes
SHA-256: 4a9c6e0b430ee7f98af26ebe47604eec7cac558b30d64c82ea64a919f892d466