Malicious PDF — malware analysis report

Static analysis result for SHA-256 074a585ebb064030…

MALICIOUS

PDF

63.2 KB Created: 2020-12-14 22:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 46c9f7469265d288d0555572572a7e00 SHA-1: e8a09c54c1ad7b6e594de24841c782b589769894 SHA-256: 074a585ebb064030545d860ef9d569b7456c7aafc91a7d529dbcc9da62799d20
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to disposable hosting services and are likely part of a link farm designed to manipulate search engine results or distribute malicious content. One URL, 'https://traffine.ru/aws?utm_term=vw+beetle+2005+manual+pdf', is flagged as a known malicious redirector. The ClamAV detection and ML classifier further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/aws?utm_term=vw+beetle+2005+manual+pdf In PDF document text
    • https://gefelamanak.weebly.com/uploads/1/3/4/3/134353999/kususumurorawi.pdfIn PDF document text
    • https://faviretekomukuf.weebly.com/uploads/1/3/4/6/134606805/pugidisux_gimoguduvod_govuk_fozozokaf.pdfIn PDF document text
    • https://xurufujes.weebly.com/uploads/1/3/4/8/134864067/47fe123c538c7e.pdfIn PDF document text
    • https://nokuzase.weebly.com/uploads/1/3/4/7/134765685/jabipe_lozajenosurofi_jafeg_kizew.pdfIn PDF document text
    • https://wanizirutakel.weebly.com/uploads/1/3/4/6/134678241/mofolawodi-gowuzafazux.pdfIn PDF document text
    • https://kizifafub.weebly.com/uploads/1/3/4/7/134714450/6267866.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/7784e977116.pdfIn PDF document text
    • https://bufetijakuvarit.weebly.com/uploads/1/3/4/8/134878832/1564410.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/togajem.pdfIn PDF document text
    • https://fobedixosofano.weebly.com/uploads/1/3/4/3/134377241/rerubadamit.pdfIn PDF document text
    • https://lefusavuforuv.weebly.com/uploads/1/3/4/4/134490278/7547969.pdfIn PDF document text
    • https://fobabugukejapa.weebly.com/uploads/1/3/4/5/134576868/janakez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd0a5bd-2b05-4121-af0e-b9dad1ebd00d/no_ragrets_tattoo_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/693a73fc-b373-4135-a60c-efcd4a2705a1/gijefeletil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85bbc07c-7049-40a4-bfef-418953eab8a7/rivexixopotiparitobelor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e10b2d9-3d12-4152-9a89-d666527f5251/zusavilubowevepugavu.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_off0000b8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8AA 5508 bytes
SHA-256: 1bae5fc8abda2cd83aa0bd2f70b36905810b867e0e64ab545a7bfe71b59e274b
font_01_sfnt_off0000cb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB72 10804 bytes
SHA-256: 5301b00b65233af14e3aef49961322736f26b62ad864e4aa5e4fc683d5830299

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