Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0a58ee92fe0cc6…

MALICIOUS

PDF

79.2 KB Created: 2021-03-02 09:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 63eb1244076ae878912f9701792568fd SHA-1: 0b1de878a0f27970574e683d88237345b197579a SHA-256: df0a58ee92fe0cc6ee700ed6e2491f7c8bd087a3d183212eccd91da3dece66d4
166 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 trojan. It contains multiple suspicious and disposable domains, with high-confidence heuristics indicating invisible links designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain keywords related to technical diagrams, likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://ponafet.ru/wix?keyword=3000gt+spark+plug+wire+diagram PDF link annotation
    • http://gezoxapawelu.22web.org/burger_king_coupon_app_android.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/zamogonawokuxeky3bwn.pdfIn PDF document text
    • http://rapejavom.22web.org/how_to_audition_for_a_movie.pdfIn PDF document text
    • http://copyrightviolationcenters.com/react_grid_template_columnsj14hg.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/41735233977.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/motorola_surfboard_extreme_sbg6580_firmware_update.pdfIn PDF document text
    • http://xuvivok.22web.org/aala_re_aala_raja_ringtone_pagalworld.pdfIn PDF document text
    • http://terugate.mypressonline.com/97884535513.pdfIn PDF document text
    • http://coins24h.com/rezo_del_rosario_misterios_gozososo7wgv.pdfIn PDF document text
    • http://onesmall.space/xozelonebaserovawukupgrry.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/rt_ac68u_default_password.pdfIn PDF document text
    • http://lnstagram-helping.live/implementing_the_lexical_approach_lewisctul8.pdfIn PDF document text
    • http://rerulekoba.66ghz.com/avivamento_adorao_central.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://sebubexegan.rf.gd/veweru.pdfIn PDF document text
    • http://puxirozenudut.rf.gd/apocalypse_meltdown.pdfIn PDF document text
    • http://xegofavun.rf.gd/half_life_problems_worksheet_answers_an_isotope_of_cesium.pdfIn PDF document text
    • http://debasixifo.epizy.com/16551316639.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F3 5644 bytes
SHA-256: 71a4857ecfaaafd367c893de915707d908838a4359bcc15ed2c6256be624afdc
font_01_sfnt_off0000fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1E 6148 bytes
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157
font_02_sfnt_off00010aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFF 10752 bytes
SHA-256: cbbb98a92f6d436a50abbb5639832056ae1e1355f388902e9df8b6ff2e0caddb

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