Malicious PDF — malware analysis report

Static analysis result for SHA-256 660f825243c299cf…

MALICIOUS

PDF

73.1 KB Created: 2021-03-26 01:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94a66f22632bb4dfc90b6eebb5cc166a SHA-1: d05456017649e8afdd7a88d64ed50a0ae1bd58f1 SHA-256: 660f825243c299cfb32cdb905d9bc18b930dae3a9354f7f398ff0807632b2e10
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to 'mh cet 2020 result pdf', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://mezovuduw.ru/award?keyword=mh+cet+2020+result+pdf
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/xenurezaloriwiliwo.pdf
    • https://dudulisatosix.weebly.com/uploads/1/3/1/6/131637211/dojofatix.pdf
    • https://jasasenud.weebly.com/uploads/1/3/4/1/134131975/puvasi-xifeb-nawuvogijipomi.pdf
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/54f34df17d.pdf
    • http://nozuwetenij.iblogger.org/zadamodasegowikomev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://saluniwolu.epizy.com/united_nations_vienna_guided_tour.pdf
    • http://nodimetonakijeb.epizy.com/77834574679.pdf
    • http://tedowok.epizy.com/jexenuraxejikoxuluzonazo.pdf
    • https://s3.amazonaws.com/nopomewegobij/21989016740.pdf
    • https://s3.amazonaws.com/satulibaren/50225814688.pdf
    • https://uploads.strikinglycdn.com/files/0936352f-2dc0-4e11-8b76-46119b374373/heart_of_darkness_summary.pdf
    • https://s3.amazonaws.com/dumupa/kunofifagaboxij.pdf
    • http://luzeparuzibez.rf.gd/54125183574.pdf
    • http://dinopug.epizy.com/jukeso.pdf
    • http://japusorusepex.rf.gd/5823695692.pdf
    • https://uploads.strikinglycdn.com/files/243b9dcc-3bef-40eb-b5ee-abad08cfb8d0/verb_list_in_english_language.pdf
    • https://s3.amazonaws.com/wolina/why_did_the_renaissance_occur_later_in_northern_europe.pdf
    • https://uploads.strikinglycdn.com/files/cf865576-7f6c-4c3f-a6b4-4c4810c93ee3/fakipekijobinugonadelo.pdf
    • http://xuvufajozurez.rf.gd/gedowik.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_off0000d4a0.bin
a3255a5ce4150297fafd64cf19de1cabd6ac56a3d34e55c018e400845e6962bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A0 4932 bytes
font_01_sfnt_off0000e587.bin
1ec5c1040f3529191fd3a316f162d5fa1da8dd55ef1cb04d9d509212b455408b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 10496 bytes
font_02_sfnt_off0001095d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x1095D 4324 bytes