Malicious PDF — malware analysis report

Static analysis result for SHA-256 69222d0a21e545e9…

MALICIOUS

PDF

72.9 KB Created: 2020-12-25 17:59:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: dcf38b9e6018eedc2e72feadfd221622 SHA-1: e6505620da09b7b80ce6ba4635bdc92ffc4ebd56 SHA-256: 69222d0a21e545e937b35f72053aa58b65d47ef748773428f3112954bca62e08
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, potentially leveraging embedded JavaScript for obfuscation or redirection.

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
  • 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://trafftec.ru/strik?utm_term=farmville+2+country+escape+unlimited+keys+2019 PDF link annotation
    • https://pedudevapo.weebly.com/uploads/1/3/4/7/134719514/wabebabobi.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/lopixijurigu-viduvuwadume-ferejofivum.pdfIn PDF document text
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/08582.pdfIn PDF document text
    • https://jafutefas.weebly.com/uploads/1/3/4/4/134489285/116668.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/69830.pdfIn PDF document text
    • https://ridixuzo.weebly.com/uploads/1/3/4/6/134605053/8671817.pdfIn PDF document text
    • https://nenuxigibasus.weebly.com/uploads/1/3/4/6/134694542/tupetabivax.pdfIn PDF document text
    • https://ruwatavefi.weebly.com/uploads/1/3/4/7/134704280/deresonelepe-wobajuwovo-gexuxetul-getogotafux.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/d5babcd7-2a04-4e9b-9294-f902b0ee85e0/cinco_de_mayo_birthday_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/ascoltare_musica_gratis_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/591a819c-e8ef-491d-8dec-c789c023e128/vavibobuvizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54e84bf-ceda-432d-93c1-2c6c30df9149/lumudemukelerilefiwebibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14679358-3e1c-4150-ba86-22ed13782ff3/canon_vixia_hf100_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/16337333128.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 5880 bytes
SHA-256: 9e1b292259cb2422b0a621afde2a711cfcf0b609babe17ecefc82bb00529ffbe
font_01_sfnt_off0000f579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF579 9604 bytes
SHA-256: 2fc5ae969e582254b6d72406fcdedbfcb2f94b5a07b0efc19570a035fd8a803c

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