Malicious PDF — malware analysis report

Static analysis result for SHA-256 4807ce21ccebec01…

MALICIOUS

PDF

74.3 KB Created: 2021-06-01 10:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1c89dbb1ea35150c4336a8df9b4ba22 SHA-1: 7454e6f93c42a50e5e3f35a929bea4705866ffad SHA-256: 4807ce21ccebec01a5271fb6d2a42c2b683dc29af187073e5475eb577e3adcf2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that, when clicked, leads to a download page for 'driverpack solution'. This suggests a social engineering attack aiming to trick users into downloading unwanted or malicious software. No scripts were extracted, but the presence of the malicious URL and the detection signature indicate a phishing attempt.

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://allytemp.ru/pbw?utm_term=driverpack+solution+13+free+download+full+version+offline
    • https://cdn-cms.f-static.net/uploads/4412158/normal_6054f01da6284.pdf
    • https://jezipupokegem.weebly.com/uploads/1/3/4/0/134042816/lirife-sakifumikobod-dupabovuwabu.pdf
    • https://xizanubafawadug.weebly.com/uploads/1/3/4/3/134321303/mejigeg_rodukexixodaxof_badalogexewijin.pdf
    • https://desalipi.weebly.com/uploads/1/3/2/6/132681317/rimibak.pdf
    • https://sasasukaga.weebly.com/uploads/1/3/4/6/134624721/95d47.pdf
    • https://cdn-cms.f-static.net/uploads/4369163/normal_601b075766b41.pdf
    • https://static.s123-cdn-static.com/uploads/4495551/normal_6000562538fae.pdf
    • https://mofugitapab.weebly.com/uploads/1/3/4/7/134728490/e100bc.pdf
    • https://cdn-cms.f-static.net/uploads/4417315/normal_60610448c0756.pdf
    • https://static.s123-cdn-static.com/uploads/4443326/normal_6008bf3220aa2.pdf
    • https://xerotopofuwega.weebly.com/uploads/1/3/1/4/131406930/6746858.pdf
    • https://mibigadoguful.weebly.com/uploads/1/3/4/7/134759919/vuwuwulemew_zinolaza_vukesezezoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gatasulupu.pbworks.com/w/file/fetch/144423714/famous_landmarks_of_italy.pdf
    • https://uploads.strikinglycdn.com/files/e8b4e291-a644-4cea-86fb-cabc865033ef/16039325811.pdf
    • https://uploads.strikinglycdn.com/files/2ff472cf-944d-49c9-a200-dbba87f02873/rekufasudemetifezalova.pdf
    • http://wozixokumo.pbworks.com/w/file/fetch/144440196/descargar_libro_como_curar_un_corazn_roto.pdf
    • https://uploads.strikinglycdn.com/files/df42bbc2-ec06-4b72-9a3e-798739f2229a/how_to_connect_bluetooth_skullcandy_crusher.pdf
    • https://uploads.strikinglycdn.com/files/60ae9074-3ca5-450c-9059-feadbf6831f1/joremu.pdf
    • http://wojipag.pbworks.com/f/2019_ford_ranger_raptor.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_off0000d6dd.bin
cc0ac8062fa4f92b2ebfae719b94548fc8d02f052c78df4fa2909b3aa4da55e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DD 5464 bytes
font_01_sfnt_off0000e99f.bin
cd614a2a475d4efb5320adf0301d96f4bc80ce167fd9b08183a23ea60494a339		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE99F 10672 bytes
font_02_sfnt_off00010d25.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D25 4324 bytes

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