Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea3cf25862657c8…

MALICIOUS

PDF

68.3 KB Created: 2021-03-05 19:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9eaee17e4d2ab6323792cee993d6cf3c SHA-1: 03dd2e8ab2655934ff2a971d44e7e32b32dfe4ff SHA-256: 3ea3cf25862657c85c3454c9e0b79921dfb084631f80bf5744a92e40102ebef1
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a phishing or scam attempt, using keywords like 'Minecraft classic unblocked' to attract victims. The numerous external links point to disposable hosting, a common tactic for distributing malware or conducting phishing campaigns.

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
  • 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://jottigo.ru/wix?keyword=minecraft+classic+unblocked PDF link annotation
    • https://cdn.sqhk.co/tipefimex/xiQidhi/19804662112.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/lobagu.pdfIn PDF document text
    • http://teksalon.xyz/68707305821s0jmx.pdfIn PDF document text
    • http://razvivatel.blog/vozaviduvlclx.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/wegadomusepa.pdfIn PDF document text
    • http://lg-copyrightforms.com/desixawozadikupnodgd.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/how_to_set_a_plug_in_timer_switch.pdfIn PDF document text
    • http://instapriz24.online/49491403756wzzl3.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/rodrick_rules_book_plot.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/Abzjegd/granny_ice_scream_4_horror_scary_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/5cUqjbX/police_drift_car_driving_simulator_game_download.pdfIn PDF document text
    • http://xakaderinetatu.mygamesonline.org/is_lestat_a_real_vampire.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/gomotopolerowil.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/joretabojate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duvodix.myartsonline.com/57570407219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f2568b-942f-4d12-a652-62d3c2fd3809/62044953151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3f842c6-d557-4ee1-a354-3e85cfc82ba5/quantum_memory_power_audiobook.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/gutejela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788eb160-8603-4be9-bf89-2b83f9b4a695/what_is_the_salic_law.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_off0000cfed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFED 5224 bytes
SHA-256: 94b4c0dd95bd27d9a8c1b324bb16897b1c9ae486e87e81089bdcafb1ab0d78bd
font_01_sfnt_off0000e1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CF 10160 bytes
SHA-256: 6c19ac418a1c9ed9af9ee1a6608e358fe23a7070622a9cf9de65cabbfa2d7295

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