Malicious PDF — malware analysis report

Static analysis result for SHA-256 9510832ae7c172ac…

MALICIOUS

PDF

41.2 KB Created: 2020-08-04 15:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18fb7474fae60c3e4e160306fd441cb2 SHA-1: 52cb2224c460bb4ab71103bad2792585f0188a75 SHA-256: 9510832ae7c172ac7edd24e37f41e19a85a001887b2faf46fa7d1a257529c6d5
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same suspicious URL and other links that appear to be part of a link farm strategy. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to malicious infrastructure via embedded links.

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=atkins+jones+quimica+pdf In PDF document text
    • http://files.daw10.com/uploads/1/3/0/7/130775220/dde63548a1b.pdfIn PDF document text
    • http://files.cafedatalkalamode.com/uploads/1/3/1/4/131483550/3bbbf7.pdfIn PDF document text
    • http://files.neckboneink.com/uploads/1/3/0/9/130969742/fiwalodibune-jemunibekazido-zazibelejirini.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/1/0433/2745/5387/files/boogie_woogie_notes_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/zubeguravozoninowavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/56481549567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5050/6152/files/ruxukojitawodutanefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/torujibexawegidekazefemeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/fofuvawosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/archicad_19_keyboard_shortcuts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/91871856866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2383/4011/files/conversor_metros_a_pies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/jepupexulozubasijixa.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_off000056fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56FC 5428 bytes
SHA-256: 809432288d1354dfd8e15a30a1290ccb1cfb93e1e0fb11b512cd398a3dea5847
font_01_sfnt_off00006972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6972 15220 bytes
SHA-256: cd5d6839291022e1d58dc3e18487e46a21331021f6926996336432a2e6a8fdf3

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