Malicious PDF — malware analysis report

Static analysis result for SHA-256 430d03ac65746fcf…

MALICIOUS

PDF

42.7 KB Created: 2020-08-05 05:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d28eac6a667a37d06207187e8c310d5 SHA-1: 3e0960be1212ab62d0bc65feb88b71f0dd9517b8 SHA-256: 430d03ac65746fcf85788cc3b15d1b2dac75ec43e12ab6b32aadbed27842e8fb
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify. This suggests a link farm or redirection tactic to obscure the ultimate malicious destination. 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.ru/pify?keyword=spider+web+graphic+organizer+pdf In PDF document text
    • http://files.4elements1.com/uploads/1/3/1/3/131380297/libala.pdfIn PDF document text
    • http://files.katycupcakes.com/uploads/1/3/2/6/132695339/zamen.pdfIn PDF document text
    • http://files.meritcoffeetogo.com/uploads/1/3/0/8/130874254/3851829.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/1/0438/3450/7426/files/daxasetuxalunim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/21011063931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/hvac_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/96382461576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4229/8264/files/xonupoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/38885316618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/vuxavutetew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/labawanubaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/vavuwodovejizej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/43446283519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/traditional_approaches_of_marketing_pdf.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_off00006899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6899 5592 bytes
SHA-256: abfeaffd67b1660353a7af8b2107b329709707868ffe5b148a7d2a85900296a6
font_01_sfnt_off00007bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB5 10156 bytes
SHA-256: 98cf35f10be7844dd2282f16c602dbfe27fb53c82f658274144960ec589c5d3f

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