Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1c21c151e6a1e1…

MALICIOUS

PDF

45.8 KB Created: 2020-08-05 14:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6abecf4d2b007489f32579d7f1eb8a78 SHA-1: 5a874e41adb7599b11efdf860737b0bed55f93f8 SHA-256: 4f1c21c151e6a1e1ac478043200bc1254cb2b976e1e046970c3a848ad5cb81fa
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one prominent link disguised as educational content. This link, 'https://ttraff.com/pify?keyword=carnatic+music+lessons+in+malayalam+pdf', redirects to malicious infrastructure, indicating a phishing or redirection attempt. The presence of numerous PDF links, many hosted on Shopify, suggests an attempt to obscure the malicious destination and potentially leverage legitimate platforms for distribution. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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.com/pify?keyword=carnatic+music+lessons+in+malayalam+pdf In PDF document text
    • http://files.alpinedesignsmt.com/uploads/1/3/2/3/132303163/5733821.pdfIn PDF document text
    • http://files.bshcare.com/uploads/1/3/0/7/130776067/wipolaf_gonugasebofotiw.pdfIn PDF document text
    • http://files.willcountyboard.com/uploads/1/3/0/8/130874284/9967945.pdfIn PDF document text
    • http://files.mypointofheu.com/uploads/1/3/1/0/131070152/9516153.pdfIn PDF document text
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.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/1/0430/8510/3255/files/libevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/xotetejap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/affectation_minesec_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/63773557160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/14867219066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/45056838993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/dudelekotufobesanulovoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9265/6799/files/lalidazalir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/gijugalutoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/41092971071.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_off00006cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 5308 bytes
SHA-256: 232126a975d4793243729ce5250e69644c50bb6e1c61f4899ef661bba987e669
font_01_sfnt_off00007ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED5 13952 bytes
SHA-256: 3669733b2e31a912541c263a8b46b92a427c80afcc1e0f2f77acdbb243f168de

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