Malicious PDF — malware analysis report

Static analysis result for SHA-256 2616e1b084888a31…

MALICIOUS

PDF

71.7 KB Created: 2020-07-30 23:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6679dd1163f28e57e78a7be476aa8eb SHA-1: f8525ae9abbfae0ffba9653865cc4e28264eb4de SHA-256: 2616e1b084888a31c03daaf1a262b874ca6094f01467b9c4dad67f801361a755
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering, directing users to a potentially harmful external site.

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=accounting+conventions+and+standards+pdf In PDF document text
    • http://files.theroute92.com/uploads/1/3/0/8/130873973/zuguxizamuri.pdfIn PDF document text
    • http://files.utopianetworkofficials.org/uploads/1/3/1/4/131407952/1584114.pdfIn PDF document text
    • http://files.baobabtreestudio.net/uploads/1/3/1/1/131164052/zumuziruxitiku.pdfIn PDF document text
    • http://files.voiceofhoperct.org/uploads/1/3/0/8/130814043/a95aa16e3da4.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/1/0432/1126/0062/files/91882521548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1620/8036/files/50782751364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/13684179740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/10130349478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/mabipene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/61152632185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/wapazexix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/14537965648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.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_off0000dcb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB2 5224 bytes
SHA-256: 1e51272af12afe2699ebae0f59082ad58c37a9618e8d66ff08c5a22c94f2596c
font_01_sfnt_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 10336 bytes
SHA-256: be93ba795391ba5c4e4d3d06401abbf008c0927ff775ca2dfe2385c94e90df67

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