Malicious PDF — malware analysis report

Static analysis result for SHA-256 9884cff7277713b0…

MALICIOUS

PDF

67.6 KB Created: 2021-01-03 07:34:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7b97b69e85b60f49c29440682a8522d2 SHA-1: 0ac3ddfc703dca8ed0bcaa351d6074af4b7d3535 SHA-256: 9884cff7277713b064fd1f495a630802f176297f75a972d913fb4e36559fb980
212 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure or other PDFs, suggesting a link farm or SEO poisoning tactic. The primary link directs users to 'gettraff.ru', which is flagged as a malicious redirector. The document body is heavily obfuscated and appears to contain metadata related to 'ww2 airplane games android', likely a lure to attract victims. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9719

Heuristics 4

  • 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.
  • 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://gettraff.ru/aws?utm_term=ww2+airplane+games+android In PDF document text
    • https://xinuluparos.weebly.com/uploads/1/3/0/9/130969110/gozedifuferoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428069/normal_5fb5e3913edcb.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/fimudolox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5f93ae4a4afc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5fa4c249436b1.pdfIn PDF document text
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/b0b290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5fd61b202cd42.pdfIn PDF document text
    • https://galezarulunozip.weebly.com/uploads/1/3/4/8/134896955/sesakaji.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/e5f34e16-458c-4717-b4c9-bf4a626f5a27/rejavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309238f3-1158-4312-9aa3-d9a400776e57/lufuwusafajikarilaxoxif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a73b932-d49b-4143-8085-08bd55b8f54a/70612395756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbca3b90-a5b3-45af-b7ba-ef726125978a/southeast_portland_tool_library_septl.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/bts_piano_sheet_music_easy_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/12836619679.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/linux_centos_7_commands.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52B 5516 bytes
SHA-256: 538f5b55797fdbcfee478a4c2a477541e3308ff26f9847716827be6d1c1db9af