Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb3cf0da598cc340…

MALICIOUS

PDF

50.2 KB Created: 2020-07-27 22:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ca9cb390eefdf48851fadd20f80ace8 SHA-1: 5222806d8d423585e7500420fdaa4e68271bf00b SHA-256: eb3cf0da598cc340fc1dec622bf04804079a4f393f93c5f92d260d6b8b464ff2
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is used to obscure the final destination. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Bill of lading' and 'wkhtmltopdf', suggesting a lure to download or view a form. The ML classifier strongly indicates maliciousness.

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=bill+of+lading+formato+para+llenar+word In PDF document text
    • http://files.anthonyphillips.com/uploads/1/3/1/4/131406075/4804145.pdfIn PDF document text
    • http://files.mandorlabooks.com/uploads/1/3/0/7/130740625/durazakumugadi_bobod.pdfIn PDF document text
    • http://files.janethunter.com/uploads/1/3/0/7/130776567/8c1e66ea4035.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/1/0429/6923/5619/files/8122947144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6626/0642/files/lagafaninezefokasekaxaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7030/0065/files/58759203292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7291/2549/files/84083200047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/79198432948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/sivasiluziruxod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/zarilalova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/komozumegalafij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/fefusevopiliwufam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/53808871561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/88872978607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/vikutupovumorejajeposej.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
🗂 Part of campaign: janethunter.com 6 samples

Related samples 2

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

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Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000891a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891A 5112 bytes
SHA-256: 1818620dcfb81b2dc456b01342989eccc26863cbf98031ec77f3581cf4d8aed1
font_01_sfnt_off00009a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6D 9724 bytes
SHA-256: 9efe024e8f7da6518e54e976e77a5c4c790e80ce5f6ee23c1a60d792715755c7

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