Malicious PDF — malware analysis report

Static analysis result for SHA-256 64342c1b3cb53fe1…

MALICIOUS

PDF

44.4 KB Created: 2020-07-30 08:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8071e4a7a0685f3200ce55a86d8fc063 SHA-1: e9126268d5ee1f2c27d02c012d691ac896527011 SHA-256: 64342c1b3cb53fe11483d8dac0f5556ae06307d355e6fe4da9946d38071c51f8
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure like 'ttraff.ru', suggesting a link farm or phishing campaign. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=monitoring+and+evaluation+tools+pdf In PDF document text
    • http://files.catholicartistconnection.com/uploads/1/3/0/7/130776298/lalaporutaraxi-lumumugafufewep-powipikoresun.pdfIn PDF document text
    • http://files.bawainnovations.com/uploads/1/3/2/8/132814050/ludazoforisutu.pdfIn PDF document text
    • http://files.beautyunderoneroof.com/uploads/1/3/1/1/131163898/9005567.pdfIn PDF document text
    • http://files.splchampton.com/uploads/1/3/2/8/132814680/5031290.pdfIn PDF document text
    • http://files.iowaiova.com/uploads/1/3/1/8/131856987/66dc91f5.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/1/0436/2846/2240/files/wevir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/29387493392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/12477466277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3422/1466/files/xesesigugefupomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/sakazufodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/99737097978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/sidofezazafigewadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/82281910885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/31841454134.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 6

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_off00007048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7048 5156 bytes
SHA-256: f3fc472442c1457bdf3ff5ec4512b2aef0cdf99e79191354de203792cbfb1704
font_01_sfnt_off000081ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EC 10092 bytes
SHA-256: d08f79de36ae30dcbbe3a0d8634e1ac9d8f9deb1cf169a0b634e73b4886b2b76

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