Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d21a2f81365c41…

MALICIOUS

PDF

74.2 KB Created: 2021-05-20 08:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 526bc34e1c771a9607102e29a0fdc249 SHA-1: 84bf93a36291de78c0b1d749fec2c15bcdf62796 SHA-256: 07d21a2f81365c416b06b2c56142f55c174419f080ade5e1f9ec5614e3445973
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a phishing page or download further malware. The document body, though heavily obfuscated, suggests a lure related to 'Ca full form in police department', indicating a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=ca+full+form+in+police+department PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376362/normal_60604d4911095.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499972/normal_60065b69470a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_606356f712e1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463803/normal_6051e28cd4455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_606cfa0e93ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_60138206bf825.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/08bada2e-a6bd-44b7-90bc-5ac184c28dfc/new_american_bible_revised_large_print.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29295f7-077f-4e8d-a34b-6c6518e156af/what_should_you_not_capitalize_in_a_title.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/54724050819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a08e9f27-8b14-4426-acd5-d093dd8f0c14/53007445382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c98bfe28-5c51-4a92-9cc4-67e41d2f0290/90974279152.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/rakuniw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/216b040e-9bdd-4379-ba4f-fde07b7b43c1/los_medios_de_comunicacion_respetan_la_dignidad_humana.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/how_to_disable_spanning_tree_protocol_on_cisco_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee328c8c-f95c-455e-9ddc-ce43d05663a8/5948912686.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/13543677187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2384d009-e688-4a64-880e-c09c39bde069/eb_white_once_more_to_the_lake_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/chinese_circus_hd_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/dadadimixu.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/therapy_coloring_sheets_printable.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE666 5028 bytes
SHA-256: d64bfed4cb4e30e1433f35f78487b4726142966cdc72c9bcdc1c2c20665c06d1
font_01_sfnt_off0000f768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF768 10736 bytes
SHA-256: b40a697975b8d0199b64cdcfc746a4484e3c205ec2607ba20e3ce39e3f77c2f6

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