Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe47eaa4f03c2248…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 20:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3dca4b8c12389b8c714d5875ea7b218 SHA-1: c26a8d5d3849c877e4c6ba36c391b9cb495119e2 SHA-256: fe47eaa4f03c224882a8a6a95b07b1f0ec09e94ef1c5a4774d185b41090232e5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=factores+psicosociales+definicion+pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or obfuscated, but the presence of the malicious redirector and the link farm heuristic strongly suggest a malicious intent, likely to redirect users to further malicious 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=factores+psicosociales+definicion+pdf In PDF document text
    • http://files.dyeing2sew.com/uploads/1/3/1/4/131438025/e95e27f21758df3.pdfIn PDF document text
    • http://files.florencejrparadarodeo.com/uploads/1/3/0/8/130874097/cf0093.pdfIn PDF document text
    • http://files.forgivenphotographymn.com/uploads/1/3/0/7/130740049/muwalabegonogup.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/1/0440/6139/3046/files/clearblue_ovulation_kit_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9360/5014/files/53487831867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2694/0067/files/norditrack_cx_1000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/nenebeputojav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/tabitaxefibalikutijisulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/nudanorosinati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/bernard_werber_les_fourmis_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/calidad_total_crosby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/89307415288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/7540374711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/manag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/75861499479.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 2

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_off00006013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 5104 bytes
SHA-256: 5add5d9d99f6e6f1bb99357a76c30acc4e5afdf06b6ae4d89b1d5fb878d5f72e
font_01_sfnt_off0000717e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717E 10580 bytes
SHA-256: 9d4a32c2450ffe64b0727c003f9261f1acea7cbaa3696e2ea6aed5c5dbf556dc

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