Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c71eca834785abf…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 12:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e57f591cf49806f25a8745ddfff79d38 SHA-1: ec699af93af39dd8634494b93483b4fd8d1d8ceb SHA-256: 3c71eca834785abf7adbdaab62adbb6e560cf2cd054308a23784a1e2ca5319cd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or redirection scheme designed to lead users to malicious content. 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=winter+park+snow+cam In PDF document text
    • http://files.patriksoderstam.com/uploads/1/3/1/6/131636825/4420188.pdfIn PDF document text
    • http://files.newskinbodyart.com/uploads/1/3/1/4/131437619/8993270.pdfIn PDF document text
    • http://files.hidingfromjapaneseghosts.com/uploads/1/3/1/4/131455636/xatedobemi_febugufukoja_lizetijogeno_wefogaweb.pdfIn PDF document text
    • http://files.grantdevelopments.com/uploads/1/3/1/3/131378932/9885453.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/1/0431/1384/0793/files/88551272071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/likebovupegizexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/10890495682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/fexilafibezatopuzezute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/98310838383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/kotamikunutijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/16477443116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0266/5892/files/bawelowalubunufixabolal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3836/6113/files/sifilajixukub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/bigesunob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/1990/files/22583174568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/53438225720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/30220442058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/nivon.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_off0000669a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669A 5216 bytes
SHA-256: d203baf873c39bc67c39e28fe6a32e75b75d31dd13691f655ba9a51a9aafb2fc
font_01_sfnt_off0000785e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785E 10488 bytes
SHA-256: 3eaa6b6292dd0acdf608bcc010a2596fae2dffc2a3769937bf219693feaa534f

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