Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1190cbf71792dc…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 10:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a06fa6074c4cc9facb0f6d33f15ae53c SHA-1: a6b08249dca996d220bbc3be680d6c7a3e317bf0 SHA-256: 1d1190cbf71792dc959d572442f175ca2ff1c1340681d522ead5e2fba7f60647
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, pointing to 'ttraff.cc'. The document body, though partially corrupted, includes text related to Google Sheets formatting and the malicious URL, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious destination. The ML classifier strongly flags 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=how+to+conditional+formatting+in+google+sheets In PDF document text
    • http://files.klshistory.co.uk/uploads/1/3/1/8/131856380/tisoronufode.pdfIn PDF document text
    • http://files.ruralflaneuse.com/uploads/1/3/1/3/131381675/3014468d82f.pdfIn PDF document text
    • http://files.pettyharbourmaddoxcove.ca/uploads/1/3/1/3/131379085/3527401.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/1/0432/7201/1941/files/zepodesekul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9400/7201/files/6617556314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7863/8998/files/bwcc32._dll_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/zuxokogezatoxapisaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/kojigil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/english_vocabulary_test_with_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/wazowaraxugavizipupoxagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/ego-_t_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/circle_of_fifths_guitar_fretboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4558/3013/files/padimirazifaj.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_off00006272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6272 5488 bytes
SHA-256: 4e550c9b3dc6569544de5c0d92ad1520199634e51bf64f069046444bd6273b8d
font_01_sfnt_off000074fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FA 10544 bytes
SHA-256: d5c13dc816bc8fd2016ff9ae6b156ab1eea869a61af9fe25e44c727e08a9eb74

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