Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6a2ce2518c0398…

MALICIOUS

PDF

38.4 KB Created: 2020-09-14 13:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fad22a1f7cff2957859340bfc44b24c3 SHA-1: 976c6202fdecdd3c441a05be59a771bea38d255e SHA-256: 9a6a2ce2518c03986766e26c261b05d77bf19d6f34d5c0ee230a4841f44929b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.link, disguised with a keyword suggesting educational material. The document body, though heavily obfuscated, contains the same lure and the malicious URL. The PDF also hosts a large number of links to other PDFs, many hosted on Shopify, which is a common tactic for SEO poisoning or link farming to obscure malicious activity. The ML classifier strongly flagged this PDF as malicious.

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.link/wix?keyword=cuaderno+de+actividades+holt+spanish+1+answers In PDF document text
    • http://vapigupi.saintgregorysileby.org/uploads/1/3/1/3/131380934/kotebogisarisaf-folijoma-rojugizaj.pdfIn PDF document text
    • http://dinukebe.confessionsofanerd.com/uploads/1/3/2/6/132695584/9005192.pdfIn PDF document text
    • http://lusixas.bethanymiraclevillage.org/uploads/1/3/0/7/130776054/871251.pdfIn PDF document text
    • http://files.bouldenscience.com/uploads/1/3/1/8/131856743/6e73b9752844573.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/1/0428/0070/9791/files/fundamentals_of_aerodynamics_john_d_anderson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2949/5713/files/ruvaruga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/44833043640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5447/files/manual_tablet_alcatel_1t_10_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1198/0694/files/40150037781.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6f5f23_203234c33c844da9bd0d9e0486f04610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/60418516248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/tangled_songs_mp4.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 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_off00004977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4977 5272 bytes
SHA-256: 5594a70660c74c106337667c1c5f108eae1cc1af2b5abeee278f5cc3e0865d70
font_01_sfnt_off00005b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B77 10280 bytes
SHA-256: bb7d56775f60bfc5fd3f25f59283ec919cca895ef3fa67951843015adfa97f35
font_02_sfnt_off00007e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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