Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d160a26ea799ad…

MALICIOUS

PDF

69.3 KB Created: 2021-03-21 08:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 655293943adf835066c41b90b30befe7 SHA-1: 6911b704a0ba121de32dd956246f3c408d723468 SHA-256: 52d160a26ea799ad968f7bcd86cea778333b243f886c41950e99c7c821057a21
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URIs, with one pointing to 'https://resalured.ru/award?keyword=agama+islam+kelas+xi+pdf', suggesting a phishing or credential harvesting attempt. The presence of many links on disposable hosting also indicates a link farm, a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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.
  • 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://resalured.ru/award?keyword=agama+islam+kelas+xi+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382197/normal_6035140b35279.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/sijiaeO/big_bang_kpop_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/yUjhOie/kidafodalatariforinoporeb.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/tgdG4h9/12618032783.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/94573572454.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/nakaxidera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_602a8264011eb.pdfIn PDF document text
    • http://bebalezuve.medianewsonline.com/tebevakonak.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxarabo/lhaHmgf/cinemark_bolivia_facebook.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/where_to_buy_lg_washer_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/qkvggdJ/93392690410.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/mary_poppins_umbrella_handle_template.pdfIn PDF document text
    • http://forezepolutaju.onlinewebshop.net/11449801202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d551845d-9ff8-4820-b92c-01c9e99ba0a7/ge_spacemaker_microwave_door_latch_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeabef63-69c1-4f57-a006-c246ba033784/fantastic_fan_rv.pdfIn PDF document text
    • http://fabonejane.onlinewebshop.net/fovofab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ee8607-ade4-400d-839f-70da16eb2878/14518122534.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/39443942171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2be7b2-5f0a-4a01-9947-69720d1b1425/46086186524.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_off0000d2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 5388 bytes
SHA-256: 90a14d6616a9f09085553128fe25b4ec3472852d0448919b675ccf5d25ba0da9
font_01_sfnt_off0000e530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE530 10256 bytes
SHA-256: 3698299d5800450057cf44f21a836d18f6ab086463ae6d299885249b09e9b749

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