Malicious PDF — malware analysis report

Static analysis result for SHA-256 9164e17b5fc60885…

MALICIOUS

PDF

42.5 KB Created: 2020-08-04 19:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f547ea716ff31b545a194de33be9f4e5 SHA-1: d6f2da40d4e09202951ddb3720e62fb22f1e951e SHA-256: 9164e17b5fc60885735fd8a21f12419de946b4fe6726dc40ac2025d081bf4149
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning model and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the same URL found in the heuristic, suggesting it is the primary lure. The presence of numerous other links to Shopify-hosted PDFs indicates a potential link farm or SEO poisoning attempt to distribute 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.ru/pify?keyword=hidrolik+problemleri+birsen+yay%25C4%25B1nevi+pdf In PDF document text
    • http://penadi.breakicemarketing.com/uploads/1/3/1/4/131407995/7f986ff0d07.pdfIn PDF document text
    • http://files.tryshashby-rolls.com/uploads/1/3/1/4/131438216/aeac3154163.pdfIn PDF document text
    • http://koterit.catchyadreams.com/uploads/1/3/1/4/131453278/f2e473c.pdfIn PDF document text
    • http://files.karinas-boutique.com/uploads/1/3/2/7/132710763/c6768dca122.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/1/0431/0610/7552/files/59810297004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8970/files/sesufadijeraxeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/34892137971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/77177952139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/pevudoxixogomebelezenikor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/50333699144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/27003466932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/bupogujajogowebaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0858/5891/files/warframe_medical_debt_bond.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/39281231781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/74685788502.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 3

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_off00006346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 5544 bytes
SHA-256: 296cb4dff0f7223a8848b9591f4fef8ab338585c4e41dd34fba6bd94c6225547
font_01_sfnt_off00007613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7613 11724 bytes
SHA-256: c72281d8617856acbe88791edc55844be9620b6c64b7acb18c05e6f7739820f2

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