Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a07e7740935ed0…

MALICIOUS

PDF

37.3 KB Created: 2020-08-06 19:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ce18e196d31c04e611899e40c27e6b5 SHA-1: ae48327739acf94f65e9976891c79f2a1182898f SHA-256: 87a07e7740935ed0e5c57b00bfcbb5ed0f696d87d6ad8369b7f71447dc116bfb
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm. One prominent link, 'https://ttraff.ru/wb?keyword=maquina%20de%20lavar%20brastemp%2010kg%20manual', is identified as a malicious redirector, suggesting the document's primary purpose is to direct users to potentially harmful websites. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure.

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/wb?keyword=maquina%20de%20lavar%20brastemp%2010kg%20manual In PDF document text
    • http://files.rechoir.co.uk/uploads/1/3/1/4/131437812/ed9770e5f4dfd3.pdfIn PDF document text
    • http://files.ridesgr.com/uploads/1/3/1/4/131437676/wugejotowupon.pdfIn PDF document text
    • http://files.moannasworkroominteriorsandstaging.com/uploads/1/3/1/3/131380666/xemotoloxo.pdfIn PDF document text
    • http://files.andilockemears.com/uploads/1/3/1/3/131379971/80c7ae7c7f9871c.pdfIn PDF document text
    • http://files.pommedapidaycare.com/uploads/1/3/1/0/131070711/d8e1d64fa4.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/1/0428/0057/8723/files/mesimujos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/judoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/70144429015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/jikewilijawejezofixuvebak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/vukudukiwunezavedogej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/97103536150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebisineseboji.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_off00004978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4978 5868 bytes
SHA-256: d34e5798e60da052a714909e1d4db869f990987ee6660b5715cc3e3d8bb42e93
font_01_sfnt_off00005d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D65 13828 bytes
SHA-256: 65dd9b7fe71f445b729062abbfc749a11fd0d09648c6615be795a91db5bcb82e

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