Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf40c8cd1a6d020d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 02:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6107bc5e90fa5f88b3e916f79351652b SHA-1: b138c9471992a6c45a0f84b2f6c94cb18965d55e SHA-256: cf40c8cd1a6d020db17ea84bc884ae96a94d8d9f2e433f1f1b721f3c0bfb4ee3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wb?keyword=soundcraft%20lx7%20manual'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, many hosted on Shopify. The document body, though partially garbled, contains references to the search term and the malicious URL, reinforcing the lure. The presence of multiple embedded URLs, including the malicious redirector, suggests a phishing or malware distribution attempt.

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.cc/wb?keyword=soundcraft%20lx7%20manual In PDF document text
    • http://files.katyhawkinsyoga.com/uploads/1/3/0/7/130775280/wixobapag_taxem.pdfIn PDF document text
    • http://files.ontariochristianchoir.com/uploads/1/3/0/7/130739146/guxoratu-lapilevajemu-sejekamujajo.pdfIn PDF document text
    • http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/31734919246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/rifujosuzoxasefukepaxukex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/36943089860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/15163112733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/jewel_quest_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3961/files/51028516601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/ecce_romani_1_teacher_s_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/general_building_construction_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/83671423603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/anguttara_nikaya_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C6 4956 bytes
SHA-256: 44d9e574c01a171d284749310137a1456d00267f5181ec44324bd3ff77a7c2f2
font_01_sfnt_off0000658a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658A 10080 bytes
SHA-256: 90f1660df7158cad2272037cbe4092e364221ed0a87e8c711175af31a8ecdf56
font_02_sfnt_off000087c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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