Malicious PDF — malware analysis report

Static analysis result for SHA-256 896536123b5087d3…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 09:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13d9951ae0e382c42b65303e0671adf8 SHA-1: 51b68ac506dcbcdaad52e5c9b57d3f3488ea2303 SHA-256: 896536123b5087d35c9a2fc91c8654cef1bd6b10af84f9acc367dc234301bbfc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into clicking it. The presence of many Shopify links, some confirmed benign, indicates a link farm strategy to obscure the malicious redirector.

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/wb?keyword=oscillateur%20anharmonique%20pdf In PDF document text
    • http://files.mass-visuals.com/uploads/1/3/0/7/130739780/jobevuwolalakijuloju.pdfIn PDF document text
    • http://files.aldercroft.ca/uploads/1/3/1/4/131453464/8a6a59876c.pdfIn PDF document text
    • http://files.bigbrowndogflorals.com/uploads/1/3/2/6/132695387/jesegoxugavudunab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1003/8683/files/battlestar_galactica_watch_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/40623733854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/14826115423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8994/files/15530165622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/8626442596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6818/4994/files/17944895426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/blank_world_map_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6100/9829/files/29410705420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4760/6679/files/kubarexodeti.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E0 5432 bytes
SHA-256: b4ca71862d2ef8e0b66ad8ff7d016e5b1bfe5a4ffdec2c91a325f8bfd87fd02c
font_01_sfnt_off00006b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 11476 bytes
SHA-256: c7973d6d709a8f43fae8df415046b4d61d241855808aa41b03c70bec828370f5
font_02_sfnt_off00008f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F96 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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