Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d23ed92006d4f1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-13 21:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18b62f888af3dee82641912879a7acf0 SHA-1: b67c95c57b70289727582462afb34b5d298d34d7 SHA-256: b5d23ed92006d4f14f6ce6a924b5d3d1f90853ca665fe66c0f84333c1bb027a3
194 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=what+is+a+nonconformity+in+geology'. The document body also contains this URL and a large number of other PDF links, many hosted on Shopify, suggesting a link farm or redirection tactic. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=what+is+a+nonconformity+in+geology In PDF document text
    • http://files.unconventionals.org/uploads/1/3/0/7/130740493/xesumumupafi.pdfIn PDF document text
    • http://files.threelakesproperties.com/uploads/1/3/0/8/130874520/4367385.pdfIn PDF document text
    • http://files.corinnemanning.com/uploads/1/3/0/7/130776481/moluno.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/1/0433/1978/7675/files/patulez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/38296786633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3406/6594/files/92084918235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/chaldean_numerology_for_beginners_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/46456462828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/79030338192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4260/files/fixture_of_asia_cup_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6912/8354/files/69311276405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/bexejiremilugezufiwanafib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/rinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3847/2357/files/82494392305.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_off00005df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 5412 bytes
SHA-256: ffcd57e1946155f9f5cb77577bb66f756e8fd90b0727694f57944f61ee03236b
font_01_sfnt_off00007041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 11228 bytes
SHA-256: 8675249e28a31f885dc59ed0d70a69f7fe17e78b8d5a7cf5eb3bc9030b4932ea

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