Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f9b4876450adca…

MALICIOUS

PDF

44.8 KB Created: 2020-08-08 07:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 761b610a57c3d4baf12f431b70db0d3f SHA-1: b50ce4d9d1a8f5146a0a4cc97c48ef6c32453c04 SHA-256: f7f9b4876450adcab303a83599704ae61b484514303465b5bc6f1881542f304c
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sophisticated+vocabulary+pdf'. This URL is embedded within the document body, suggesting a social engineering attempt to trick the user into visiting a malicious site. The presence of a PDF link farm heuristic further indicates a pattern of distributing malicious links via PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.cc/pify?keyword=sophisticated+vocabulary+pdf In PDF document text
    • http://files.spgallagher.com/uploads/1/3/1/4/131455832/denomu_rujanal_wedevudu.pdfIn PDF document text
    • http://files.staffordforstaterepresentative.org/uploads/1/3/2/6/132681513/marupedolika.pdfIn PDF document text
    • http://rotika.panicoentertainment.com/uploads/1/3/0/7/130775734/zelatutonupamo_riwuvorugefawi_rutixiwazokubon_bozukewesovulo.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/1/0438/4066/7808/files/73094155751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/articulo_de_opinion_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/kamupowulamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peregomosurexezobosezob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/advertising_company_profile_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/jagedaruniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/vurubimeganexunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/gavokefugefiditafisif.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_off00006fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEE 5648 bytes
SHA-256: 8b5e459f1ab989bf6febdc51f2b7002aa44c4a72a25199476e0c9bfa4de17518
font_01_sfnt_off00008323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 10444 bytes
SHA-256: 733bfdac31806afd428424dbde9bdde720091b7651a23f4c8f46c6f0d21cf3e4

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