Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e93d1ac22b75a53…

MALICIOUS

PDF

42.2 KB Created: 2020-08-25 23:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 490af0c6d61046bc063f055ef889ab00 SHA-1: 1f28224a1bb5d7033fd2a36f4dac0839acc5d540 SHA-256: 3e93d1ac22b75a533e26983e6d5fc888649e8a5cf9d10a7202f57eed83174079
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a spam or phishing campaign. The primary malicious URL identified is https://ttraff.ru/pify?keyword=fca+suayed+unam, which is likely used to redirect users to further malicious content.

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=fca+suayed+unam In PDF document text
    • http://suzimofu.coscinecreative.com/uploads/1/3/1/4/131453247/32e25e611d.pdfIn PDF document text
    • http://litumono.rayjoneswoodboxes.com/uploads/1/3/2/3/132303108/63f53adff4.pdfIn PDF document text
    • http://files.rainboascales.com/uploads/1/3/0/8/130874085/abca4d2c1a6b8.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/1/0429/6900/6236/files/aws_certified_solutions_architect_official_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/nauka_angielskiego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/pdf_accessibility_checker_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/zenuvonotibelebulasok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/nordvpn_vs_pia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/gezatolas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/sififijutipob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/43197694201.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E04 5016 bytes
SHA-256: 7a7883ae61b5027237ec144298c56e15a387b3a6f996464b88067d61aabf8c63
font_01_sfnt_off00006efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 2092 bytes
SHA-256: 78e94e2e47178245ca437e301e19f50dc99845ecc02da2ba30fe2b1e34051cc2
font_02_sfnt_off000078a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A3 10380 bytes
SHA-256: e0d380b9d2b675a95241034861c19f3c2f496fb4d40e7af21b73d740b97d3e00

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