Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b945462b12e776…

MALICIOUS

PDF

76.7 KB Created: 2021-03-19 11:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45b46b6499bb5aeaa0adf5ea6d8f1504 SHA-1: e104bdb9743851b97b25be31e80771b9326a0ef6 SHA-256: 64b945462b12e776bd3a3f88b96e6c40f225a96367bd90d0d6748850bb515a00
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to phish user credentials or deliver a secondary payload. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to search terms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/wix?keyword=100+pics+answers+catchphrases+2
    • http://jenerotisa.mywebcommunity.org/rowonezazulonukigukovesug.pdf
    • http://vopagokiniki.mypressonline.com/jimavesiderazi.pdf
    • http://evgeniy-semenenko.ru/pafasidosakepaidjxb.pdf
    • http://buybritishcat.com/dokavejo0nlub.pdf
    • http://upgrade4me.com/36480911585l8v3f.pdf
    • http://jolixasij.sportsontheweb.net/which_detergent_is_best_for_front_load_washing_machine.pdf
    • http://wumewil.sportsontheweb.net/zanesagalin.pdf
    • http://migriruy.ru/echo_and_narcissus_clip_artcktuf.pdf
    • http://13millions.store/blue_planet_world_biomes_webquest_answer_keyot211.pdf
    • http://dopogabijup.mywebcommunity.org/gobakalipujivifejevo.pdf
    • http://wumewil.sportsontheweb.net/6735786892.pdf
    • http://fufejezonodim.mywebcommunity.org/28959238806.pdf
    • http://lozejebivo.scienceontheweb.net/niwodewerutewelete.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gosaduzunake.myartsonline.com/30007184513.pdf
    • https://uploads.strikinglycdn.com/files/a86d7fb6-9d32-4390-ba09-cd0816638c2a/dell_optiplex_790_user_guide.pdf
    • https://uploads.strikinglycdn.com/files/92f1fe6f-66a0-4b8f-b3a7-9b4f94f07901/zuwenuxe.pdf
    • https://uploads.strikinglycdn.com/files/c4d82c2b-24f0-4feb-911f-55ce6f1c9dc6/word_for_touchy.pdf
    • https://uploads.strikinglycdn.com/files/7c2d1079-ffcf-4026-8816-a42011a16a3e/74695074292.pdf
    • http://sojufuka.atwebpages.com/91065855590.pdf
    • https://uploads.strikinglycdn.com/files/a8094e31-8d1b-4e54-9eec-05143330d1cd/80105285269.pdf
    • https://uploads.strikinglycdn.com/files/61c6f720-6e93-46f1-89f2-22d7d40dcab5/39256720295.pdf
    • http://poborunedajemo.onlinewebshop.net/54603350534.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_off0000ec16.bin
80789872afed9250fad95b0aa182d36b64d9ee09e1c4354bc42e738078a4831a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC16 5312 bytes
font_01_sfnt_off0000fe32.bin
ef40fae422edf27545b45f8b520fb353cd9d349bfcb32fdddb4506c7639c5df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE32 11640 bytes

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