Malicious PDF — malware analysis report

Static analysis result for SHA-256 9323d4b2167dd105…

MALICIOUS

PDF

47.5 KB Created: 2020-11-02 18:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3a6c6020893934b98208ef545bbe7c0a SHA-1: bec166991b94494da8be0948195fc7cc6bfb8a75 SHA-256: 9323d4b2167dd1057d19390416390cf787b059d646247add624ed747e0b8c1a1
154 Risk Score

Malware Insights

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

The PDF contains a link to 'ggtraff.ru', identified as a malicious redirector. Additionally, it hosts a large number of external PDF links, many pointing to S3 buckets, suggesting a link farm or SEO abuse tactic. The ML classifier strongly indicates maliciousness, and the embedded URL in the document body reinforces the phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/aws?keyword=operation+ember+rise+release+date In PDF document text
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/4661938.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/0f13357c.pdfIn PDF document text
    • https://luxapojago.weebly.com/uploads/1/3/4/3/134327771/3557365.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xisefowu/low_cost_leadership.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/fobiwebokefuki.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/tensile_test_astm_e8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0490/4350/5329/files/83506166467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8659/2196/files/83349639873.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/critical_path_method_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/teronaputajitetoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0665/4626/files/b_series_engine_rebuild_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/psychologie_heute_archiv.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_off0000796e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 5272 bytes
SHA-256: e9890e527fd9d6489b906377a6248023ff3d5e7df63d29b653fc74d5b04fcb6a
font_01_sfnt_off00008b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2E 11144 bytes
SHA-256: 5d464f66fed3fa30030a68cff8934f81859c7175792006b05801cae08b2e8103

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