Malicious PDF — malware analysis report

Static analysis result for SHA-256 7898c1d9b1c28fb0…

MALICIOUS

PDF

50.1 KB Created: 2020-08-06 02:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b9c13e45521760852561615571afb02 SHA-1: f464f82720b4d6494768e5bd96503a927f712ce7 SHA-256: 7898c1d9b1c28fb0f1da38892a1de2a789c38072b420e0e23c3c06b41a3148cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=classifying+triangles+activity+pdf', suggesting a lure to download further content. The presence of numerous SEO-optimized PDF links indicates an attempt to distribute malicious content widely.

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=classifying+triangles+activity+pdf In PDF document text
    • http://files.suffolksingers.co.uk/uploads/1/3/1/6/131606984/212881d88fbe6.pdfIn PDF document text
    • http://files.completebydesigncbd.net/uploads/1/3/1/3/131384293/pogufolu-rakifebe-velut-pibutoduwebeper.pdfIn PDF document text
    • http://files.pronkzaak.nl/uploads/1/3/0/7/130738974/zided.pdfIn PDF document text
    • http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.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/1/0430/7668/1882/files/wexunoxovenuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/78156104778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/27841960107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/deep_water_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2589/1479/files/senidebom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/zonulobusasowazisewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/43109260864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/xebowinazimufitakovusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0374/8263/files/lakunolilixulevu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000711e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711E 5392 bytes
SHA-256: f507067017c99ca4e09fe6ba6f4bf621348b50074a5e7e4c2da367c9a124daed
font_01_sfnt_off00008394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8394 9992 bytes
SHA-256: 638b5ede33c1b2467f62d323bce13f1431f3a880eaea78398e59f5cc3864572e
font_02_sfnt_off0000a5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E7 16208 bytes
SHA-256: 314c85c55222e9c47571dccce4b967dbed516664fd4a23da38c55357a676f718

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