Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25bb606f65bc073…

MALICIOUS

PDF

46.7 KB Created: 2020-08-18 20:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ea32e96e1bbdcb998c3e6b2e4e7b22c SHA-1: 04c5f830ba3bf96e21fa1cdd6e843ea4c868c307 SHA-256: e25bb606f65bc073be65030e5b51ec7611b0b3bca1e7c67d4059692b663eea0b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=counting+stars+piano+sheet'. Another critical heuristic flags the document as part of a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to drive traffic to malicious sites. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the primary attack vector appears to be social engineering via embedded links.

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=counting+stars+piano+sheet In PDF document text
    • http://zedujo.urbanpho.com/uploads/1/3/1/8/131856772/wumanefabufu_xelasewiwuvavu.pdfIn PDF document text
    • http://files.allisonmondel.com/uploads/1/3/2/3/132303151/8204210.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/1/0435/0600/8216/files/97916106508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/wujivekavaranudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7550/2234/files/wokubomawovabaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1121/4245/files/18681281593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4735/2480/files/kikoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3384/6175/files/ponakopifitelun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/degoduvaroxenudijoxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/platelet_count_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/allergene_wko.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5A 4952 bytes
SHA-256: 5b0b43ca199373b3745ee908c83da517351099bd14f6f347aea249d08cd3ba91
font_01_sfnt_off00006d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2F 14248 bytes
SHA-256: 4959e8eabed517e45498379c6595bfdcca89fcf90feb46c41ce06b1bf074a529
font_02_sfnt_off0000993b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x993B 16072 bytes
SHA-256: 3da9309f7c28e01a20d15285b754fad9116e6eb7744d168a0fff2950d6122081

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