Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddfcbc718bde447…

MALICIOUS

PDF

41.4 KB Created: 2021-01-11 12:30:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fbd6e481085f2145aee41ac82d16fa84 SHA-1: ef75cf08460808dd702bd089414e8ad1c26f2a6a SHA-256: dddfcbc718bde4478833ab89e102c0a76e35ae311012c53b75ac932b5cdce2eb
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier. It functions as a phishing lure, presenting a screenshot to entice users to click a link. The primary link, 'https://traffmen.ru/aws?utm_term=bangla+noboborsho+pic', is flagged as a known malicious redirector, indicating it leads to further malicious content or exploitation. The document's structure and embedded links suggest it is part of a campaign to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8204

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
  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://traffmen.ru/aws?utm_term=bangla+noboborsho+pic In PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/795995a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381321/normal_5f97d0d84c0e4.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/hihhKRa/9550281883.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/2fZ6jj9/wood_project_plans_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_5fafbbc61ba96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f90e405eac31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412905/normal_5fa7adb294a1f.pdfIn PDF document text
    • https://site-1168081.mozfiles.com/files/1168081/37371880111.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445555/normal_5febc925a0da8.pdfIn PDF document text
    • https://site-1168430.mozfiles.com/files/1168430/nabekak.pdfIn PDF document text
    • https://site-1178950.mozfiles.com/files/1178950/50634051213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425491/normal_5fab52e5200ab.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/9gjBha7/tetigaz.pdfIn PDF document text
    • https://site-1173152.mozfiles.com/files/1173152/youtube_praise_and_worship_gospel_songs_with_lyrics.pdfIn PDF document text
    • https://site-1193425.mozfiles.com/files/1193425/9173601661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475212/normal_5fb99262d6cbf.pdfIn PDF document text