Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c8f10b9637d8be…

MALICIOUS

PDF

73.3 KB Created: 2021-03-29 19:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 647928a51335865f45e2664c74f4ffbb SHA-1: 7b160f518372fd96b02f3bf1ae5c6c861b1a9f9e SHA-256: 07c8f10b9637d8be52ffc3829b08bec20fedeb99b2191a3544dee68a6a8bdbeb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to an 'ice cream maker manual'. The presence of numerous external URLs, including one explicitly flagged as an external URI, points towards a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure itself likely facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://golowaki.ru/wix?keyword=members+mark+ice+cream+maker+manual
    • https://kukatuvitakutir.weebly.com/uploads/1/3/4/6/134690336/5822d506403.pdf
    • https://cdn.sqhk.co/sejiragidu/vGigsEe/barber_shop_brooklyn_center_mn.pdf
    • http://sdorovie-sustavi.xyz/zonofosasusokidesalasxku8u.pdf
    • http://legko.travel/minority_report_trailer_2015t0zoh.pdf
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/79a3a5f9a.pdf
    • http://zuwatujusuz.22web.org/28556789666.pdf
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/e9cb2c91f9e3000.pdf
    • https://cdn.sqhk.co/vipujitebiki/iapjfha/jogagu.pdf
    • https://sozagigojo.weebly.com/uploads/1/3/1/4/131454883/952746.pdf
    • https://xilarurizajefa.weebly.com/uploads/1/3/5/3/135347329/2580659.pdf
    • https://static.s123-cdn-static.com/uploads/4408195/normal_6008022e00a29.pdf
    • https://static.s123-cdn-static.com/uploads/4384821/normal_5ffc994a89a57.pdf
    • http://zupurowuzuxule.iblogger.org/altered_carbon_resleeved_review.pdf
    • https://cdn.sqhk.co/vaxarogajib/tPQhg3H/costumes_for_dogs_2020.pdf
    • http://goldenframecollision.com/problemas_de_notacion_cientifica_resueltost2qw5.pdf
    • http://govorudoxamelap.22web.org/suzexarotufonumubo.pdf
    • https://cdn-cms.f-static.net/uploads/4486042/normal_6058f8afbf7a6.pdf
    • http://rp-youtube.fun/foil_turning_3d_unlimited_moneywuvsu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kizuwopo.epizy.com/speaker_knockerz_album.pdf
    • https://s3.amazonaws.com/viboxikuz/nufoxubotugomasatonetu.pdf
    • https://s3.amazonaws.com/nevowimo/what_are_military_source_operations.pdf
    • https://s3.amazonaws.com/megodipewukitoj/dudarimun.pdf
    • https://s3.amazonaws.com/xajowu/58881947287.pdf
    • http://vubapapi.epizy.com/atoms_elements_molecules_and_compounds_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c4.bin
92f002e19d90224a95ee884feb0444680a586f6f0e1ff5b031c3f40691a95bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 5156 bytes
font_01_sfnt_off0000f43f.bin
24304b9f2e797d9b4dab4e63b3b5f417ca31e8a246078af7869020951d0a388f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43F 10516 bytes

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