Malicious PDF — malware analysis report

Static analysis result for SHA-256 9272177eee1c07d2…

MALICIOUS

PDF

37.5 KB Created: 2020-08-04 13:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 835a36157be808e5276f69c69c1fc7c2 SHA-1: 971ee11ca34dde99c7d00e47828ed887ff62baac SHA-256: 9272177eee1c07d2f3933cdd9da2c738f4b06ce9a2fde1bbe1264b43443a8e6e
194 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior by acting as a link farm, directing users to numerous external URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=epistaxis+pdf+otorrinolaringologia', is identified as a known malicious redirector. The document's structure and the high volume of embedded links suggest an attempt to obscure malicious destinations or engage in SEO poisoning tactics to attract unsuspecting users.

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=epistaxis+pdf+otorrinolaringologia In PDF document text
    • http://files.naifaidaho.org/uploads/1/3/0/7/130738548/lijurevo.pdfIn PDF document text
    • http://files.literaryadventures.net/uploads/1/3/1/4/131438419/dakigujupumofusaf.pdfIn PDF document text
    • http://lokagew.cccommunityscholarships.org/uploads/1/3/1/4/131454549/janulam.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/1/0437/8833/7303/files/balepotog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/tacoma_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7498/4863/files/nomodoxitog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/2303571621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/lenamezumunubujipabibuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/simplex_tableau_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/kepupazejoxole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/ballade_pour_adeline_piano_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/2008_dodge_avenger_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/vaxojolawaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/lopugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/45923979747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2987/2292/files/35798022198.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 3

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_off000054dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DC 5232 bytes
SHA-256: 8cdc04d3a791f47898c0c2d80296b331d867d5ac488172496d5619dca4872cf4
font_01_sfnt_off000066c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 10144 bytes
SHA-256: 57fd263fc6f20ccac0edc9e7164f2c6723eae22af7d935f5ae0854511f8ee75b

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