Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2adb4626cc56e3…

MALICIOUS

PDF

42.5 KB Created: 2020-08-16 20:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 147d1909780abc7fde60c1cbec40fb08 SHA-1: 04a082f2a585a6bbc11a53e4dc544df6381bc79a SHA-256: 9d2adb4626cc56e332a9de86c75ec82f5dfab0d71ed2ff8cc5cabc3703644a9d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This URL is presented within the document body, disguised as a link to a PDF file. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed to attract traffic. The ML classifier also 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.cc/pify?keyword=car+vocabulary+english+pdf In PDF document text
    • http://files.awha.org/uploads/1/3/1/4/131453255/lakubasaguja-luzoxewaridibul.pdfIn PDF document text
    • http://files.fallsevengetupeight.com/uploads/1/3/2/7/132740711/8011113.pdfIn PDF document text
    • http://files.hillcresthuntingclubincllc.com/uploads/1/3/1/4/131453917/tavigowuzij-zuzanovitan.pdfIn PDF document text
    • http://files.carriedrobnick.com/uploads/1/3/1/3/131379553/2436674.pdfIn PDF document text
    • http://pekozugi.aliceinfinitycosplay.com/uploads/1/3/1/8/131871980/10139a6.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/1/0437/8555/2030/files/how_to_play_arpeggios_on_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7550/2234/files/rizabikivizoxawidutaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/80115059948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/reading_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3898/9718/files/66860451983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/mujatasomiwoxetafatezet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/minecraft_tekkit_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/display_adapter_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/43316457191.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_off00006788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 5624 bytes
SHA-256: c9b9674a5cdb7bc7ca8d8b16fd33317d38b455da794c681a6a4885f97205ced7
font_01_sfnt_off00007aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA8 10120 bytes
SHA-256: ecde3bfc38da2fc45634cd238ba82393615da9856b8760fc0f6267e3358a8247

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