Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2d343daff85ce8…

MALICIOUS

PDF

89.2 KB Created: 2021-03-16 06:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb718dea2ae3c4b2f8fd260edeb86e7c SHA-1: 258c4f712a32e3fc8f15c5ef261a654645a51885 SHA-256: 9c2d343daff85ce8b1c7bc768e9c70130ee9ae3d9eea3d3fd445eabc76856862
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, forming a link farm designed to direct users to other malicious sites. The primary URL identified is 'https://lozipotod.ru/wix?keyword=rockford+fosgate+r500x1d+bass+knob', which is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=rockford+fosgate+r500x1d+bass+knob
    • http://ch-bewertung-2888.xyz/835398346873qzo3.pdf
    • http://tawojerikopopud.iblogger.org/64069419358.pdf
    • https://lojavexir.weebly.com/uploads/1/3/5/9/135963097/01ddee.pdf
    • https://binujoxejixisov.weebly.com/uploads/1/3/4/1/134108892/476747a1fbb76b4.pdf
    • http://rukunikuxajosog.22web.org/51888346928.pdf
    • http://copyright-infringement.business/mega_bandwidth_limit_bypass_jeryvs2f.pdf
    • http://copyrightnotices-form.com/what_are_the_advantages_of_teacher_centered_methodq88d7.pdf
    • https://kizifafub.weebly.com/uploads/1/3/4/7/134714450/5821621.pdf
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/zinimomitibife.pdf
    • http://lami-lashes.site/rijonefopubegagi609bw.pdf
    • http://unityfree.xyz/womapalotuninikuraxikunj31xy.pdf
    • http://bapozuwemixad.22web.org/bodiwogu.pdf
    • http://joteruraxa.22web.org/what_is_rating_factor_of_cable.pdf
    • http://aduo5.online/reliwisuwagiwmhb6y.pdf
    • https://tabikanopik.weebly.com/uploads/1/3/4/7/134705808/8bd44ca34bf7aa.pdf
    • http://meblik.su/gamo_air_rifle_owners_manual7extf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_ba45573e65674d3e915e6cd5115aede7.pdf?index=true
    • http://gudonuwoponiri.rf.gd/70459585731.pdf
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_4d9adfb8da0d4fa595e2f5b35bfe7e04.pdf?index=true
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_3f4781184acd498183ad830cfd4ff533.pdf?index=true
    • http://fopagozijudiri.epizy.com/47223808442.pdf
    • http://simatan.epizy.com/xogifevazosififated.pdf
    • http://medojowibapij.epizy.com/pintame_angelitos_negro_poema.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c7f.bin
49f6ecfd1c620bb43ba8f497024f1aa04878ef890db98e822272e2c421525859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7F 5496 bytes
font_01_sfnt_off00011f41.bin
1ad57d51fcc1d0bb40dfe1992eebec5451f2280e428f0fad66a42760a6b8d0d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F41 11684 bytes
font_02_sfnt_off00014727.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14727 4324 bytes

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