Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fe226a50e7e4ba…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 11:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d872f4bc81d8817ffbf2d33f8360646 SHA-1: bf7cb8031de24426215c9a173cda054ceef80622 SHA-256: c9fe226a50e7e4bacf0acbe940aff3ef09b40ce537634ec66089add8a0feb626
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a free Excel to PDF converter download. This indicates a phishing attempt to lure users to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm tactics used to improve search engine ranking for malicious content.

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/wb?keyword=excel%20to%20pdf%20converter%20free%20download%20app In PDF document text
    • http://files.loveforchinese.com/uploads/1/3/2/6/132683400/d13d828f7b69.pdfIn PDF document text
    • http://files.rameyphotoco.com/uploads/1/3/0/8/130814858/lajamebimunezen.pdfIn PDF document text
    • http://files.motherhoweslittlecows.com/uploads/1/3/1/4/131453967/favedomezanevej-sajobekovubox.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/1/0434/1569/9621/files/momebuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/nexefatojarib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/41707809853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/return_vector_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4183/9514/files/accident_investigation_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/78959259818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/nivubemija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/oxford_bookworms_library_stage_1_titanic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/79837360112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/31880266538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7505/1421/files/62529497176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/decimal_number_line.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 2

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_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 5148 bytes
SHA-256: 7399a7a76cd74d97df301092e39b9faf52576e283cdee7c4c1bfe66036ad0f9d
font_01_sfnt_off00007599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7599 10012 bytes
SHA-256: c76d1a4c513ca3f94343109450c862497e58aba707a9e3e91858197faa071cf7

Open this report in the interactive analyzer, or submit your own file for analysis.