Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27dcedbbd7a6357…

MALICIOUS

PDF

72.7 KB Created: 2020-12-08 10:27:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b549f0ba6519cc1404694cf270f79a7 SHA-1: 73c95c72726679d1be85144b58974085e9295765 SHA-256: e27dcedbbd7a6357a1b9fd3f697761ce4d27387ee642f93d9c0ebbc5e2f41e85
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many pointing to SEO redirectors, indicating a link farm or phishing attempt. The primary URL, 'https://trafffe.ru/strik?utm_term=first+aid+step+1+anki+deck', is identified as a high-priority IOC. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=first+aid+step+1+anki+deck PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f93a0aa17d92.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/nalot.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/gazegova.pdfIn PDF document text
    • https://nirulutot.weebly.com/uploads/1/3/4/7/134700174/20c546b3134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5f9d027439fee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fc90fc780f79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5f9d54afdd9dc.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/6d9f72702a9dd46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414175/normal_5fc0f83940e55.pdfIn PDF document text
    • https://jazaxalik.weebly.com/uploads/1/3/4/4/134488577/7746192.pdfIn PDF document text
    • https://rikurifijuse.weebly.com/uploads/1/3/4/6/134681474/2743582.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3B 5108 bytes
SHA-256: 47668a31b5dc485d3690385843e86950c3ea13f8a3dcb8883998f00bc6bff607
font_01_sfnt_off0000ddb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB4 10364 bytes
SHA-256: bd07c533e9df9f5b5be95a063e862dd61f370d85b0a89932eddd74a0ad8042c0
font_02_sfnt_off00010184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10184 16080 bytes
SHA-256: 3d50f22d3ae6d9a4461c814f81554cc573a3512c555c2f223aedeeaca19cd658

Open this report in the interactive analyzer, or submit your own file for analysis.