Malicious PDF — malware analysis report

Static analysis result for SHA-256 2763e97c59d4a0b5…

MALICIOUS

PDF

38.6 KB Created: 2020-08-19 02:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d733c1c17c107b774d082f6ab4979c3 SHA-1: 488983175c359039119fda3652e8a178c1974158 SHA-256: 2763e97c59d4a0b51974c6d03377fe848f74e2796c9e4e164b7ffeb2ba69ba84
194 Risk Score

Malware Insights

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

This PDF document exhibits malicious characteristics, primarily through its extensive use of external links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that at least one URL points to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=simpsons+clue+score+sheets'. Furthermore, the PDF_SEO_LINK_FARM heuristic identifies a large number of links to other PDFs hosted on domains like cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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=simpsons+clue+score+sheets In PDF document text
    • http://files.roundlaketheatre.com/uploads/1/3/1/3/131380158/703301.pdfIn PDF document text
    • http://files.kcgtransport.com/uploads/1/3/0/7/130775997/770473.pdfIn PDF document text
    • http://xofezu.arnprioranimalhospital.ca/uploads/1/3/0/7/130738970/5592489.pdfIn PDF document text
    • http://fiwukibum.nanditabatheja.com/uploads/1/3/1/4/131409090/1eb108.pdfIn PDF document text
    • http://mebib.brentolstadmusic.com/uploads/1/3/2/3/132302978/tiruxegogarofedidum.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/1/0431/7570/6788/files/70963351801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/78133420871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3912/5667/files/the_assertiveness_workbook_randy_j._paterson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1355/3827/files/69185360553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/nicholson_microeconomic_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3283/6256/files/jebexudutere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/76095891359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/41525243348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/xolexemumet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/tic_tac_toe_java_source_code.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 5

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_off00005883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5883 5064 bytes
SHA-256: 01c31f91c245df2e27d7602e7b0d18591bae343b37e825b995a55236d164ef08
font_01_sfnt_off00006986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6986 10540 bytes
SHA-256: cfbf2f9e63aa4a12cb5ba37bc80699cf30880c97f542c326fd735bc880670d55

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