Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8c64c3995acea2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 17:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86b0ca77b93acef3d60366c94aa242ec SHA-1: 1999bc8282f92c51c11404cff71d8b27f7718af9 SHA-256: 1f8c64c3995acea2d0d380a3c591f7b30329572f398452348f55f1849abddb19
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=glacial+acetic+acid+msds+pdf'. The document body, though heavily obfuscated, contains text related to 'glacial acetic acid msds pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm SEO tactic.

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.com/pify?keyword=glacial+acetic+acid+msds+pdf In PDF document text
    • http://files.sandersinkstudio.com/uploads/1/3/1/1/131164399/9798423.pdfIn PDF document text
    • http://files.natureswayhealthfoods.com/uploads/1/3/0/7/130739614/dilulenopopukodax.pdfIn PDF document text
    • http://files.madysonkennedy.com/uploads/1/3/2/3/132303286/sunumite.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/1/0433/3866/2053/files/28559545777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fezinugafoxejukonimajav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0414/5309/files/misery_penguin_readers_level_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/65865855308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/nemogejodavorowaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/zonusagobonaraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/xogigex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/80839775353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/calculus_9th_edition_larson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/que_es_el_acoso_escolar_o_bullying.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/75594375748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/pabutezaboginuz.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 6

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_off0000627d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627D 5236 bytes
SHA-256: 2d6e6c4ffdcf7bf4c9702ab0b1c8fb469914add54fa5a7ee6a49c64a535480ff
font_01_sfnt_off00007446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 10412 bytes
SHA-256: c41ab92ad285860d8971162a85d2869717898cc40b080f4fcafe171724d4816e

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