Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7190f29ee86847e…

MALICIOUS

PDF

76.8 KB Created: 2021-03-25 04:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d24c9d8c6cd758de60ed63ffdc8fa678 SHA-1: c84aad3933fd7ae03963322e11dc0d37f0b84f81 SHA-256: a7190f29ee86847e3f2ac42bdbe14cd681f949f7efe7e803b88bd3fda4e82150
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to movie order, likely to redirect users to a malicious site. The PDF structure also indicates it functions as a link farm, increasing the likelihood of user interaction with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=what+order+do+the+percy+jackson+movies+go+in PDF link annotation
    • http://likefetevu.getenjoyment.net/gudevefekiware.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365542/normal_5fcbad4fd4394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473379/normal_604672c1f338b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476122/normal_5fe6ae54b2190.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470553/normal_5ff13d625b94d.pdfIn PDF document text
    • http://mejikisevupepen.iblogger.org/android_studio_toast_message_with_variable.pdfIn PDF document text
    • http://gudutisiluzew.mypressonline.com/92722548174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489587/normal_6028281c1288e.pdfIn PDF document text
    • http://zuzutogutid.22web.org/12510548925.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibulokesimerog.rf.gd/edhesive_answers_1._7_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/30352811404.pdfIn PDF document text
    • http://malebowepapin.epizy.com/dobumivotifapi.pdfIn PDF document text
    • http://magotabitujotu.rf.gd/kamasilaw.pdfIn PDF document text
    • https://46b09160-81f9-4cb3-9cca-f7b5b0c0229e.filesusr.com/ugd/179cc6_be1a034dc53846c083d3ee6be42c8415.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/tenakidixeluk.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/85635448524.pdfIn PDF document text
    • https://d0275d90-c5b4-4c72-b581-d0e2b62fc6dd.filesusr.com/ugd/ee54da_2c11f4809e0741f69635cf95330dce50.pdf?index=trueIn PDF document text
    • http://vijanemafe.rf.gd/guidecraft_dress_up_storage_center.pdfIn PDF document text
    • https://874c0fd6-92eb-497b-905f-dc7ca4d2e287.filesusr.com/ugd/5ca7d4_df10371971de4a4b94030e93f468ed41.pdf?index=trueIn PDF document text
    • http://lotawovuvowuk.rf.gd/81542207397.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDA 5768 bytes
SHA-256: 8a2feece37c698bc278d8c730b4534ded1aa6427802fb254b23d56ff0eee002c
font_01_sfnt_off00010275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10275 10508 bytes
SHA-256: 55f574700b86f89c20edb71a060bc026740126ca903160da690aa7ea95bd3b1a

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