Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b561075e0b6766…

MALICIOUS

PDF

31.4 KB Created: 2020-10-09 14:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0adcd5ccbe1cca4f0e65cc273ec39227 SHA-1: a24d0d6350e2874d36938da8dc3a23980d3c6942 SHA-256: 69b561075e0b6766034f69ad8660ede8a6a393b405f6f4ed70114f15fe71c548
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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 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://ggtraff.ru/strik?keyword=fugetek+ft-568+manual In PDF document text
    • https://site-1043479.mozfiles.com/files/1043479/67805671415.pdfIn PDF document text
    • https://site-1043976.mozfiles.com/files/1043976/31200519996.pdfIn PDF document text
    • https://site-1048248.mozfiles.com/files/1048248/bosesurowexoxixigoroti.pdfIn PDF document text
    • http://files.heartofagiant.org/uploads/1/3/1/4/131482931/57e57b.pdfIn PDF document text
    • http://files.vesselartsco.com/uploads/1/3/1/3/131381204/5698121.pdfIn PDF document text
    • https://site-1044255.mozfiles.com/files/1044255/sijiwojil.pdfIn PDF document text
    • https://site-1048482.mozfiles.com/files/1048482/zuvetebajave.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/renaissance_scavenger_hunt_answer_key_back.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/luraxibup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1367/files/usapl_raw_nationals_2019_prime_time.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_off000058fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FA 5336 bytes
SHA-256: 696b60958d0ed5b5d68080df2f29d5fe0fcfd0fafda18d4a4c4e83b2da88edcc

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