Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc023498ab653ba…

MALICIOUS

PDF

37.4 KB Created: 2020-08-17 18:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2fd51b65844feffa478c6f590bacb9f SHA-1: 10fb1120cf9fadf7ed6a23b88d1aa878b02bcdec SHA-256: 7cc023498ab653ba6dc07ccb9aaa5cf9fbda838d00ad0701f6b2f7841b300b7b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and also lists multiple benign-looking PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness, and the overall structure points to a lure for phishing or malware distribution.

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=routines+adverbs+of+frequency+worksheets In PDF document text
    • http://rusedaboz.frackfreefoothills.net/uploads/1/3/2/6/132682137/ef051fe87e.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/1/0432/6552/3870/files/biomassa_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/allahabad_bank_internet_banking_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/40868271598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/1208783084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2098/9095/files/fitojazejapafute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/sawiwekemiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/32685023584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/93947086568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/66280866026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/54810668887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/tositemokitevik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/85753176320.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_off0000537b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x537B 5668 bytes
SHA-256: a83a6ddd05e1609d82d2b56e7541cda791387e0b97616d6cf5afd47963349d11
font_01_sfnt_off000066e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 10184 bytes
SHA-256: 716f2976e0c9763598bbffc39066b9dcc9ca7bce6b77a8af1beee1df40e120c5

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