Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d79e9260e24a12e…

MALICIOUS

PDF

41.3 KB Created: 2020-08-24 07:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fcc00ce5f86a04126b10d82527928d9 SHA-1: 2645df931018cd9f632b7e55cc8fa72e2dcbe62f SHA-256: 5d79e9260e24a12e63ffb90690af2471e531e9336527f1684f91f583110ebb9d
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though partially corrupted, contains the text 'Boletin informativo afpnet' and the malicious URL 'https://ttraff.ru/pify?keyword=boletin+informativo+afpnet', suggesting a phishing or malware distribution lure. The presence of many external PDF links further supports the SEO link farm heuristic, indicating an attempt to drive traffic to potentially malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=boletin+informativo+afpnet In PDF document text
    • http://files.hairandmakeupcompany.co.uk/uploads/1/3/1/4/131406807/b9d80ccb78483.pdfIn PDF document text
    • http://files.pontyclunchiropractor.co.uk/uploads/1/3/0/7/130738752/b51169b1b530.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/1/0429/8774/9529/files/minumexikojej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7554/files/78129812749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2865/9614/files/tazapejejovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/vubonogomom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/5221524562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/how_to_ping_lol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6086/1845/files/situbilijomeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/72432040270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8147/9832/files/wovorifulimuratamarod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5481/files/best_text_editor_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/fideveluvorebedes.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 3

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_off0000653d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653D 4976 bytes
SHA-256: 0fc9425badb133e8b4304458dbce91ad9acd6674a354ac365c2c013ff475e02c
font_01_sfnt_off00007617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7617 10152 bytes
SHA-256: 36b202f989b2441f203611b9476d8edcdd1dd5a5b4eead0e4fda418b42532966

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