Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9459d1a9c0a1cf…

MALICIOUS

PDF

78.1 KB Created: 2021-05-07 07:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ad9b42cb345b883c9b41dcf08e0e5bfa SHA-1: defa88dd7fb0467cde37b5ffbe83634609f60f46 SHA-256: 6f9459d1a9c0a1cf3588a82ca774e8d653550164ec2353de7b382305f928b246
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier as malicious. It contains numerous external URIs, many pointing to disposable domains, indicating a link farm designed to redirect users. The document body, though heavily obfuscated, contains references to URLs that are likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/strik?utm_term=do+mary+poppins+and+bert+get+together PDF link annotation
    • http://bamefidev.mygamesonline.org/rukaj.pdfIn PDF document text
    • http://vevebopawo.mywebcommunity.org/case_files_in_physical_therapy_pediatrics.pdfIn PDF document text
    • http://nokilibetajew.mywebcommunity.org/lipobu.pdfIn PDF document text
    • http://clipshd.design/sabaxojomapn016.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/criminal_justice_system_in_usa.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/basatewuwotutob.pdfIn PDF document text
    • http://bigowet.xyz/98050832683rpn84.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/turuzukibenofek.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/loforud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459325/normal_602438b0f279a.pdfIn PDF document text
    • http://pc-remont.website/fundamentals_of_engineering_thermodynamics_8th_edition_answers7yn0q.pdfIn PDF document text
    • http://dedigevobunobe.medianewsonline.com/fumalatepukakawazugirono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_602c6d2bbc080.pdfIn PDF document text
    • http://soldonlittleton.com/what_is_macbeth_like_in_act_1_scene_3hefic.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/kumon_simple_addition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5ff3ccfc46556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408463/normal_60436c4aebcc6.pdfIn PDF document text
    • http://mesretly.xyz/coursera_machine_learning_week_6_assignment_answers2xl9g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kijonag.onlinewebshop.net/volawofikijowifogulixotav.pdfIn PDF document text
    • http://tubiruk.epizy.com/msds_amoniaco.pdfIn PDF document text
    • http://kidaxuv.epizy.com/escape_plan_board_game_rules.pdfIn PDF document text
    • http://kiwusumusi.rf.gd/tamil_dubbed_animals_movie_free.pdfIn PDF document text
    • http://supajiwa.myartsonline.com/64218633517.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_off0000f2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D7 5584 bytes
SHA-256: 6d9558ab6faedb1e02fa638b6be9170599f910e6027da3d6a30c4d6378f680b4
font_01_sfnt_off000105aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AA 10280 bytes
SHA-256: ec665e9bc6807954078fa95b8592538851b4529a9c9cf1c533551a7a9326d76a

Open this report in the interactive analyzer, or submit your own file for analysis.