Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c575fbc1aef62a…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 13:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8938cff4363119832526d4c01b342b09 SHA-1: 3fccfd790f313165f125f5d6fa6ccde8889628c4 SHA-256: c7c575fbc1aef62a82ae5fce166ba3a46fbe49341bed13220ec74730643978bd
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary link, 'https://ttraff.ru/pify?keyword=career+guidance+test+pdf', is presented as a career guidance test, likely a social engineering lure. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a link farm designed to distribute malicious content. The file's purpose is to redirect users to malicious infrastructure through these 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=career+guidance+test+pdf In PDF document text
    • http://sagixu.delaneydrywall.com/uploads/1/3/1/6/131606346/mijikexizova_puvofamilagewop.pdfIn PDF document text
    • http://files.rkspeech.com/uploads/1/3/1/4/131438249/9075954.pdfIn PDF document text
    • http://fegozuxaj.iwanttobeanengineer.com.au/uploads/1/3/2/6/132682883/kedazoz_wadabevenasax_saguwipure_lakoregaz.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/1/0432/7679/6057/files/gusozesarizilavekefaxifok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/objectives_of_berlin_conference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/the_economist_may_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4170/files/7359855455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3248/5799/files/46504974326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2737/2964/files/dofisujuwamorexex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/45082515374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/leveganuvogimutofofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/dunadojusezij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/vodurizirejube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/39906111363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/nabogonasabobufupopurim.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_off00006ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD1 5196 bytes
SHA-256: 77ac0a51e2077519b3f70b36759cc6d7f0a6425ab7112a511a5bd7eab65488ec
font_01_sfnt_off00007c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8A 10300 bytes
SHA-256: 3caec329a7c227550597e558bdf428ba136fec457a3117335176d773b070a9b0

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