Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7cb05d4b931044e…

MALICIOUS

PDF

42.4 KB Created: 2020-08-03 22:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3fa005a8edf205e116f0c9cd31b3882a SHA-1: ae6904ecedbc46fb02f35d444ae370250edb2ca7 SHA-256: a7cb05d4b931044e833983318593efdec21a2c7e9655a65525559da87dc01c4d
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=sprinkler+irrigation+types+pdf'. This URL is presented within the document body, disguised as information about sprinkler irrigation. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to benign Shopify domains, likely to improve search engine ranking and obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=sprinkler+irrigation+types+pdf In PDF document text
    • http://jozake.petraschool.org/uploads/1/3/1/4/131407818/sidegezolesi.pdfIn PDF document text
    • http://files.midtown-office-space.co.uk/uploads/1/3/1/3/131383467/tixekinifuzuku_notifavikakedag_dokaxuni.pdfIn PDF document text
    • http://files.college-boundplayerportal.com/uploads/1/3/1/4/131453861/a52be56aa19.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/1/0430/7743/5556/files/44351081011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41557636134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2101/files/50536507285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8746/9471/files/9218754146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/68875377062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3201/7058/files/16417191391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6231/9517/files/70634353854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/25238410224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/zujimanipawolajabuwigesep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9430/9019/files/61241087896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/dexadoxarobej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/jefanamorisaxalenos.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_off0000663a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 5480 bytes
SHA-256: 2e17dce913c52faa1aa25f6d1c64b89756ddce500f6fc77fb2710e9dad66d0da
font_01_sfnt_off000078fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FA 10484 bytes
SHA-256: 72bf5f0a65dffac767a4bd4c8a835d0cfb7c5b9cd32bec303d9c4c53fe7bfb6d

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