Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ea1549623a20ae…

MALICIOUS

PDF

40.1 KB Created: 2020-08-01 11:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3551e7d21acd12e9d5b0cc47f9336b4c SHA-1: de1229f807cb79761fb520ba9510ae937cd7961c SHA-256: b8ea1549623a20ae9cd3d6d4c7efd59efd3c699c5f8aa4e3601051110b7191e4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to a link farm hosted on Shopify. One of the primary URLs, 'https://ttraff.ru/pify?keyword=knife+of+dunwall+safe', is identified as a known malicious redirector. This suggests the document's purpose is to lure users into clicking malicious links, likely leading to further compromise. The ML classifier strongly supports the malicious nature of this PDF.

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=knife+of+dunwall+safe In PDF document text
    • http://files.oneshop42.com/uploads/1/3/1/3/131398560/demulesug_wuxativun_fofel_texew.pdfIn PDF document text
    • http://files.anjoybaskets.ca/uploads/1/3/2/6/132682655/siruxe.pdfIn PDF document text
    • http://files.actingupchildrenstheatre.com/uploads/1/3/0/7/130776611/7b15a6c7114a.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/1/0438/4168/3618/files/97186908081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/puretugudizigekaxovunonum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/wanalimilem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/jemifax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8508/6374/files/85237811786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/jejaduwegejigomanilekenox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4600/8982/files/java_arraylist_initialize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/gilelinunedevoremalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6291/0376/files/60531705081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/49549380695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/76553251180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/bujetomimanulidekem.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_off0000614a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 4868 bytes
SHA-256: 19860591bbf11de061e4418c33ca9323fb046ba9f232a4a6c86009d1538ae2b1
font_01_sfnt_off00007207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7207 9880 bytes
SHA-256: 2bbfd594c4ab3768cc0f057c4a9c498ef660037360c31c717425b526f94f9bb2

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