Malicious PDF — malware analysis report

Static analysis result for SHA-256 3257e93995e7144c…

MALICIOUS

PDF

77.8 KB Created: 2021-02-28 07:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2cb49d3fcede1c2a2005d8d1ae0882fa SHA-1: bb5f05e4c37b7df5dfe3a10f90f754490e1f527a SHA-256: 3257e93995e7144c128c52d3480e68d0cabdf51e1d0673bd2bbbabb78b4e4207
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The embedded links, such as 'https://yafferge.ru/aws?utm_term=air+fryer+recipes+indian+non+veg', are likely intended to lead users to phishing pages or download further malware. The ML classifier also strongly indicated maliciousness, supporting the classification as a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=air+fryer+recipes+indian+non+veg In PDF document text
    • https://cdn.sqhk.co/zunezafi/izhjTaj/turbo_prepaid_card_customer_service_phone_number.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/xutevoxage.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/aicBThg/18256908895.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/hiyicjf/nasutuwefutofadixanan.pdfIn PDF document text
    • http://ribavid.medianewsonline.com/57721041036.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/what_is_earwax_made_of_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/camedia_master_app.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/85940681493.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/board_resolution_for_resignation_of_director_template.pdfIn PDF document text
    • https://cdn.sqhk.co/bikuwizatag/ejabjj4/34251633712.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/63636081164.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/jbibhaL/disudarofidejepiluxax.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/hjjsifH/axis_football_game.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/kaposi_varicelliform_eruption.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/acronis_true_image_2018_keygen.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/16315408191.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gurabagoderes.atwebpages.com/sigma_1009_sts_manuale_italiano.pdfIn PDF document text
    • http://jujobope.atwebpages.com/unix_commands_cheat_sheet_2019.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_off0000f1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CC 5444 bytes
SHA-256: 11d5fafa27639b646a2d6a55dd40359f18d0560491e945a02de8a997e78dabc7
font_01_sfnt_off00010477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10477 11128 bytes
SHA-256: d9f11d1f1b142096bebf82af5f40b7d83f616dc9be2d8ebf352938e8e0f547a1

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