Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4f9eebdd4ad425…

MALICIOUS

PDF

84.8 KB Created: 2020-12-10 21:58:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c4fc944e13137b0fb3754a17ef3f02ca SHA-1: 5151c526e41d151abe596715366d2745b527366f SHA-256: cc4f9eebdd4ad425631b955dda2d61f7825dc764f3d932cd376a32af238b9724
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, specifically flagging it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a lease agreement, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=lease+agreement+for+house+template PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6d84b5f0d731e16a86864/t/5fc9e21385627875175d8bec/1607066132370/fumenonon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc111b5ff13940aa240a14e/t/5fc505cb08845d0924282970/1606747596603/51911786906.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/botizivim.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/vanilla_wow_dungeon_level_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc792ce81da8a590db1506d/t/5fcea32ee0c378597cf595be/1607377710963/rupeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db17ff3e-e7b3-4b28-bf07-693a20a9c9ee/menodaxixutelatud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fa52dd96f5918e535ec/1606373286356/jasuvaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc287fac89e1c4b8fc8e063/t/5fc657fa3f75b16643acad29/1606834171506/4_pics_1_movie_level_37.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a8fbc819f1cf4ceb8da/1606371984321/the_e_myth_revisited.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf356b4c4d833b8bcadd3/1606218583858/romeo_y_julieta_espaol_latino_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18e08239b07229135edd6/t/5fd2233d071bbc6880333588/1607607107197/sportsmax_zone_hosts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fcc75665177ea328cbaa91d/1607234929874/township_of_washington_nj_police.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d1c924b06a7eb32152dd/t/5fc86f9fd17d55300fae774a/1606971297247/jujejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9cf7e72-b2c3-41af-8b9c-853a1cb7f2ea/19663654573.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_off00010e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E24 5256 bytes
SHA-256: 4a5f04983d818bfd8edb49ecd6f85a4784869cc6acd2ca52e5ed95970bba64c8
font_01_sfnt_off00011fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE4 11500 bytes
SHA-256: fbce8d61b6fd1f387075c09c055bc10ef76842f4cd86ac7302fefdb57f2002dc

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