Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a2cf2909e8d979…

MALICIOUS

PDF

52.9 KB Created: 2020-07-30 19:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfbe586a70f37e95819e5888585481a0 SHA-1: 58cb15b42c22c9bdcf8c7393c98d729be99b28e4 SHA-256: b5a2cf2909e8d979e332db7a2a3e957828132574a3fc7bd8d09e9e9c2d07cc05
194 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, suggesting a phishing or scam attempt. The primary malicious URL, 'https://ttraff.ru/pify?keyword=bel+ami+r%25C3%25A9sum%25C3%25A9+par+chapitre+d%25C3%25A9taill%25C3%25A9+pdf', is designed to lure users with a resume-themed link. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content.

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=bel+ami+r%25C3%25A9sum%25C3%25A9+par+chapitre+d%25C3%25A9taill%25C3%25A9+pdf In PDF document text
    • http://files.adventurerefined.com/uploads/1/3/1/1/131164572/4719083.pdfIn PDF document text
    • http://files.nomadnubians.com/uploads/1/3/1/3/131379434/b3b0c70021e.pdfIn PDF document text
    • http://files.piedmontgreencbd.com/uploads/1/3/1/4/131406715/nalakifaseko.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/1/0439/3297/5272/files/zikujipawevazelumirada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/82034074084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/bikexopenawerug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/pirudusowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/lutiliwubinopepugutidanot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/xaseluriro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/ligepog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/25537412274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/53992653946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/mexifopurotimajegaledagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/ribemajeg.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 8

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_off00008d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D44 5252 bytes
SHA-256: b5633eaa03188df3f0b3c20f7cb39ab1cd628c37d27525f03a2dde6baf8ad25f
font_01_sfnt_off00009edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDD 11972 bytes
SHA-256: 1741297fd3f0756fdbb5e9f9400443d128c81aa172fef408ffa526f7228d7131

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