Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6c421a4305f752…

MALICIOUS

PDF

73.4 KB Created: 2020-07-25 10:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f28f40768a0fbcecfa8410c71a88ed7 SHA-1: 3fb026a9111344ed1fbdfe576cf1f92b25606b9a SHA-256: 7d6c421a4305f752bbbfda270a27e5afc3d62d89d6a3e7430ef0877de556eb92
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to create an SEO link farm, redirecting users through a malicious URL (ttraff.cc) to download other PDFs. This indicates a phishing or scam attempt, likely to distribute further malware or collect credentials. The ML classifier strongly supports the malicious verdict.

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=modul+akuntansi+keuangan+kelas+11+pdf In PDF document text
    • http://files.modernliftestablishment.org/uploads/1/3/1/3/131380847/5202342.pdfIn PDF document text
    • http://files.thesjrphotography.com/uploads/1/3/0/7/130739398/xizawovoxod_nagomajus_mimuwitu_jujuwo.pdfIn PDF document text
    • http://files.onpointprimarycare.com/uploads/1/3/0/7/130776591/durab-dapozofesidezag-kitodujaxume.pdfIn PDF document text
    • http://files.y4f.co.uk/uploads/1/3/1/8/131871786/kixokus-temeteboxonoro-besawulix-pumifuxejiz.pdfIn PDF document text
    • http://files.lwvchampaigncounty.org/uploads/1/3/2/3/132302768/5760672.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/1/0432/0506/6907/files/laguvozefetulesuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/tijugegatabowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/44177284068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/zujapekopibevejej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/gemikomotowopaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/tomesopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/tubigigizeziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/rozefilip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/60764181286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/50351420705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9728/files/7140229726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/83590733081.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD733 5116 bytes
SHA-256: 5d485f28e53809f1fd71113f92902ef61e2aa49e494ada1af65e6ae6b0bce2a8
font_01_sfnt_off0000e8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 15168 bytes
SHA-256: 281b900ab33ad7ba1585ddddad6ea8e0cd814e82d418a40cc8dae4716f372c85

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