Malicious PDF — malware analysis report

Static analysis result for SHA-256 5785e043d9e520e2…

MALICIOUS

PDF

34.2 KB Created: 2020-08-12 07:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e6c0e0b4efa6980925cf6176ce527d0 SHA-1: 2d52367a840fe2ea47313153c86264c4040cc3d8 SHA-256: 5785e043d9e520e2a404a225c556893b5dc51533707920e5c1c1da6fb299a946
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDF files. However, one critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains references to 'samurai sudoku printable pdf' and the malicious redirector URL, suggesting a lure to trick users into clicking the malicious link.

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/pify?keyword=samurai+sudoku+printable+pdf In PDF document text
    • http://files.sailingthetechseas.com/uploads/1/3/0/7/130776763/vorij.pdfIn PDF document text
    • http://files.countrychicksoaps.com/uploads/1/3/0/7/130776558/8ad9e8.pdfIn PDF document text
    • http://dopegix.evartchamberofcommerce.com/uploads/1/3/0/7/130739415/putejitubanugosunu.pdfIn PDF document text
    • http://files.millercounselingserv.com/uploads/1/3/1/0/131070604/ca9f1af929ac2.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/1/0436/2944/5273/files/budget_line_economics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/reverse_linked_list_recursive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/71158905644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/billing_system_project_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/tema_si_viziunea_despre_lume_enigma_otiliei.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9527/7214/files/71479346698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/ird_payment_slip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8574/files/draft_river_basin_management_bill_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/komowene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/ledexevubosorobipu.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_off000048b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B2 5496 bytes
SHA-256: 043aa0b14d77bb3aef0e522fee4719d142104362feacb1956fa84eaed2317957
font_01_sfnt_off00005b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B46 9536 bytes
SHA-256: 32014cb5fe64d64a4e48b26cf20a34bc0a6bf40f51af30d5869c4e3cf50f13d4

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