Malicious PDF — malware analysis report

Static analysis result for SHA-256 092ca7808b28418e…

MALICIOUS

PDF

47.0 KB Created: 2020-08-02 18:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11d03687ca68d254cbdefb8edb334c85 SHA-1: d2a882b0563d6052a6e279501d78903ac0af636c SHA-256: 092ca7808b28418e49f5b7e66694a88cc44e38582692d5f1b831248830fd61a1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed to host numerous PDF files. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=node+js+download+file, which is flagged as a malicious redirector. This suggests the document is part of a phishing or malware distribution scheme, likely using a spearphishing attachment as the initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=node+js+download+file In PDF document text
    • http://files.alchemymovement.co.za/uploads/1/3/1/3/131398555/c3c9f98cebf178.pdfIn PDF document text
    • http://files.mikearcherphotography.com/uploads/1/3/1/3/131398113/3835d.pdfIn PDF document text
    • http://files.karlasnewhope.com/uploads/1/3/0/7/130775747/dosojosim-mabedokawisumem.pdfIn PDF document text
    • http://files.thenewhoosierbroadcasters.com/uploads/1/3/1/4/131483440/380240c73100f9c.pdfIn PDF document text
    • http://files.stonehilltheatricalfoundation.org/uploads/1/3/1/0/131070212/8939837.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/1/0438/9486/6088/files/fugojalebubirulinesixam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/fosofekadoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/bekefeviduti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/tukotajij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2479/2224/files/viwenebakuzudotew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/kunivigosupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/petasatazoxakigakefunuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/84327008521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3616/files/54706901766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96617946950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/bandwagon_propaganda_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/dipenodofowipesugalozale.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D93 4940 bytes
SHA-256: 12bc9506cb06127b074d54a3e0405a4d7a96df69e0ce63287f3e956e55f2f8b2
font_01_sfnt_off00007e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E91 15256 bytes
SHA-256: 6ddce0377f61f53224c016f4c1db467bf3dc3ea7521a92be64c48439c8cf073f