Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fa2f2ea0f48242…

MALICIOUS

PDF

83.7 KB Created: 2021-02-14 02:13:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 23e7a060b1365088ba57231d70536db8 SHA-1: fc4e9efd25227520e381fc6880cf2380816baca6 SHA-256: 34fa2f2ea0f48242f51e07f0c3e6aee2aa3b7554d05057fa36af94e5f431aeb8
126 Risk Score

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 or trojan variant. It contains numerous external URLs, many pointing to disposable domains or link farms, suggesting a phishing or SEO manipulation scheme. The presence of embedded JavaScript, though not fully analyzed here, indicates potential for further malicious actions like downloading second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://bologen.ru/wix?keyword=color+of+clay+meaning PDF link annotation
    • https://cdn.sqhk.co/nifodotiriru/XjibAgf/wow_classic_solo_dungeon_gold_farming.pdfIn PDF document text
    • http://teren.fun/joduxejoxewusisoxekuvoz3iwgl.pdfIn PDF document text
    • https://jaluwaxigesife.weebly.com/uploads/1/3/4/6/134640648/zawanetebamujolo.pdfIn PDF document text
    • https://tupetemen.weebly.com/uploads/1/3/0/7/130738754/lezufon.pdfIn PDF document text
    • http://turodes.iblogger.org/58221993966.pdfIn PDF document text
    • http://safodimim.iblogger.org/nevikizutagemodivapev.pdfIn PDF document text
    • http://cybety.xyz/bekiguse1wk.pdfIn PDF document text
    • https://benipotuwazel.weebly.com/uploads/1/3/4/4/134445242/bixuboj-kivat-gutelifanulelez.pdfIn PDF document text
    • https://zifokodogip.weebly.com/uploads/1/3/1/3/131398222/0994c897144a48.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/barozezimiwova.pdfIn PDF document text
    • http://nout-prokat.website/clickfunnels_sales_page_templates4e096.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/ggifjh6/playlist_fashion_trend.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/jSjjTYu/31735625167.pdfIn PDF document text
    • https://dapinolun.weebly.com/uploads/1/3/4/7/134762022/7320558.pdfIn PDF document text
    • http://karaulovlife.site/58741163524qqyje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texozokuvet.epizy.com/wetedi.pdfIn PDF document text
    • http://vebavibokifoko.epizy.com/auto_chess_origin_apk.pdfIn PDF document text
    • http://pinezininefos.epizy.com/chemical_equilibrium_problems_with_answers.pdfIn PDF document text
    • http://xorabaza.rf.gd/crystal_reports_11_windows_10.pdfIn PDF document text
    • http://relizaki.epizy.com/calendar_2019_online_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/adverbs_worksheet_fifth_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/game_dev_tycoon_for_android.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_off00010c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3A 5028 bytes
SHA-256: 378f1b538364f36c640fa55c5961239a508de486ec39bf483d2195c0884da851
font_01_sfnt_off00011d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4A 10744 bytes
SHA-256: e49317769e06d67267f164c2147863dc05ec8c41732b189649362565e340e992

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