Malicious PDF — malware analysis report

Static analysis result for SHA-256 487b94ae04e16299…

MALICIOUS

PDF

40.5 KB Created: 2020-08-21 20:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1c357e9a0fca261b6cba4ab46b6aeb3 SHA-1: f311daf1224845389a17ab19150bf3baabc913e5 SHA-256: 487b94ae04e16299eb0b8cc033abbd5d5887944b54f467762f71a2fce23f7937
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cool+font+styles'. This indicates a phishing or scam attempt, likely to lead the user to a compromised site or malware download. The ML classifier strongly supports the malicious verdict.

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=cool+font+styles In PDF document text
    • http://files.maryleemusic.com/uploads/1/3/0/9/130969277/5488004.pdfIn PDF document text
    • http://files.thegreatestpuzzleever.com/uploads/1/3/2/7/132712005/4747756.pdfIn PDF document text
    • http://files.chrisspaight.com/uploads/1/3/1/0/131070393/bexasotonorobagarug.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/1/0429/4947/6518/files/nenanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/67139204498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/61631330764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/9970/2694/files/lord_ayyappa_hd_photos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8828/1761/files/dugamusabakoberemisevin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5797/files/fefurigirifuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3067/4597/files/vibujeviweveliwapapazevaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4869/5958/files/6187390908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/sumojuguruzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1925/3413/files/basudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4440/files/kevodinofipowuridi.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: chrisspaight.com 3 samples

Related samples 5

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_off000063ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 4460 bytes
SHA-256: 417986e8927d5294415df061068c40530381c8827c63b880e8a7e367a1bc2ec9
font_01_sfnt_off0000734d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734D 10052 bytes
SHA-256: 4dd7a3ab600c51b1458dff417902b22b96e46f7cbb36ece0f685be0827200ae8

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