Malicious PDF — malware analysis report

Static analysis result for SHA-256 01dbd30799441da6…

MALICIOUS

PDF

77.3 KB Created: 2021-03-31 15:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75a1776493564286b11148936d9fe6c5 SHA-1: 9f3f4c5031e0a715738151ca7bc6b713c520abe0 SHA-256: 01dbd30799441da635ab4894b6f69bdc602935e6aefc95697f029b11c4b10121
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a malicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document's content, though obfuscated, suggests a lure related to an 'experiment worksheet'. The presence of multiple external URLs indicates an attempt to redirect the user to potentially malicious content or download further payloads. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of a phishing or malware distribution attempt.

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://bologen.ru/wix?keyword=redi%2527s+experiment+worksheet
    • http://oneitshop.pro/naranod6w8e.pdf
    • https://static.s123-cdn-static.com/uploads/4470678/normal_5ff92b5f2dc27.pdf
    • https://cdn.sqhk.co/pomisiforuko/hatggjc/38822298098.pdf
    • https://cdn.sqhk.co/tosobulig/fHJJhhY/mx_player_apk_android_2._3.pdf
    • http://bilet-pdd.site/the_norton_field_guide_to_writing_4th_edition_free_downloadz9r05.pdf
    • https://cdn.sqhk.co/mujexoxa/MDUYjfb/brest_fortress_defence_1939.pdf
    • https://cdn-cms.f-static.net/uploads/4451221/normal_5fd9463fbab8c.pdf
    • http://ponezivugatub.22web.org/34516855861.pdf
    • https://gimisezijumini.weebly.com/uploads/1/3/1/4/131453276/pavafimunebugasujuk.pdf
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fdef42e0d8ac.pdf
    • https://cdn.sqhk.co/wewidipo/4ibteZG/nurorokep.pdf
    • http://tufurujepuduxop.22web.org/arrays_and_pointers_in_c_programming.pdf
    • https://cdn-cms.f-static.net/uploads/4491398/normal_6050784d82df4.pdf
    • https://cdn.sqhk.co/tewisifupib/Cilhiic/sinijawabufo.pdf
    • http://salea.site/1941_winchester_model_94_30_wcf_value2yrag.pdf
    • https://sifapovidajep.weebly.com/uploads/1/3/0/7/130738911/48fd8761f.pdf
    • https://goreduve.weebly.com/uploads/1/3/2/7/132740848/nitikuperi-bexarew-favejojobezate-xajulef.pdf
    • https://cdn-cms.f-static.net/uploads/4459469/normal_5fd9156e9e292.pdf
    • https://pukukadusese.weebly.com/uploads/1/3/4/6/134666137/f5fbb6ced265a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://givinedefadedi.rf.gd/fusionner_un_fichier_en_ligne.pdf
    • https://s3.amazonaws.com/jupevuxirapi/mind_control_delete_walkthrough.pdf
    • http://vevosewis.rf.gd/lamupabezevomanos.pdf
    • https://s3.amazonaws.com/regovadeje/fovimebugusu.pdf
    • https://s3.amazonaws.com/wutisigila/emiway_song_giraftaar.pdf
    • https://s3.amazonaws.com/kumasala/tibulagasusamujiv.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_off0000f0ac.bin
251b65efb6165e59c19ccbbd7dcbd71f0cf2819b8b5bbf518779aaa567eb292d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AC 5224 bytes
font_01_sfnt_off00010269.bin
7a8ff316047ccd959d8f0809ba8d770c89915cf24789b402325fd11c420b2e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10269 10980 bytes

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