Malicious PDF — malware analysis report

Static analysis result for SHA-256 d280f9b0e0b0f1f4…

MALICIOUS

PDF

46.4 KB Created: 2020-08-03 13:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f0a9ec2f9a24f3e84045092a4be08c0 SHA-1: 8d9bd3c4263fff3b7932846ded3a44b26f3e693e SHA-256: d280f9b0e0b0f1f46d0179c3445007245fac8bce533b3765e2cb8dd4e019418f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, 'https://ttraff.ru/pify?keyword=factores+psicologicos+en+la+adolescencia+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites under the guise of providing academic resources.

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+psicologicos+en+la+adolescencia+pdf In PDF document text
    • http://wudixare.rebeccarankinyoga.com/uploads/1/3/0/7/130776644/51e9b83ac37.pdfIn PDF document text
    • http://files.barbaraervin.com/uploads/1/3/2/6/132681443/3845620.pdfIn PDF document text
    • http://files.kristysfineart.com/uploads/1/3/1/3/131380482/banufonokarig.pdfIn PDF document text
    • http://files.nmbathessentials.net/uploads/1/3/1/4/131408546/62edf0ed5e3f9.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/1/0440/6044/2774/files/runavazoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/gilbarco_genuine_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/volvo_s60_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/pevofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/22577955975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/xejobeketus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3511/files/kaludivadorepavatukexis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/geliwinoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/kofivobujozojorikuroxupim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/98983810260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/megobosa.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_off00007394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7394 5276 bytes
SHA-256: 53284375b4816aa978daed417f94607a617ced9cc53ad70f3f3968e674637e21
font_01_sfnt_off00008596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8596 11468 bytes
SHA-256: 3289e65b3f95fa06c1a3623a86186b2646b9d854410d3daa5fa796d679361ef6

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