Malicious PDF — malware analysis report

Static analysis result for SHA-256 a78644e2460f786c…

MALICIOUS

PDF

46.2 KB Created: 2020-08-04 05:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30170cbf35221d7ee3d2c92ba7ca62ac SHA-1: 5ac9f34cd4148f60b0191288eec89331074518c5 SHA-256: a78644e2460f786c823fdc447738e0b827fbb725c4c28000eecda034a34c4e0d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.ru'. This suggests the document is designed to lure users to malicious infrastructure. The ML classifier strongly supports the malicious verdict. No scripts were extracted, so the exact second-stage payload is unknown, but the primary attack pattern is redirection.

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=conducting+polymers+polyacetylene+pdf In PDF document text
    • http://files.lalacookspunjabi.com/uploads/1/3/1/0/131070149/taxesijitejutar.pdfIn PDF document text
    • http://files.ridgeandvalleyreptiles.com/uploads/1/3/1/3/131380292/nixamuz-gigedutogu-fepalufiwupiv-fipamix.pdfIn PDF document text
    • http://files.emteches.com/uploads/1/3/2/7/132740580/5715165.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/1/0430/9667/0365/files/90376436929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/lufewosaritexeriwemigagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/punijoligi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/dejowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/robikezelafakopiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6112/0919/files/bissell_proheat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/devipejanusojib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71419102660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/91376147911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5732/3933/files/28063163163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/butterball_xxl_turkey_fryer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/tusawogapilibefafa.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 4

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_off00007662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7662 5484 bytes
SHA-256: 97a930a9bc41aae8596dc21850d3d5a2dba73f745af7c8dc786c41b19b75cc07
font_01_sfnt_off000088f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F8 10176 bytes
SHA-256: ccec2c104d0595ccf6c446eb6969b14a63a6b0308c32d6d5562eb462a7bc74b6

Open this report in the interactive analyzer, or submit your own file for analysis.