Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ddd74fe5f65a8d…

MALICIOUS

PDF

73.3 KB Created: 2020-11-25 03:36:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 22680ee242e212b88c63db82636b8bc8 SHA-1: 7c2bf8215d0fa3d2e02130e45ef57eebb94e9574 SHA-256: e0ddd74fe5f65a8d658fb1fd11b33a125a587b40c7266a021506f61ced7b242d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially obfuscated, contains text suggesting a fake error message to trick the user. The embedded URL points to a suspicious domain, likely serving as a lure to a phishing or malware distribution site.

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://traffset.ru/strik?utm_term=overdrive+error+obtaining+license PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5f89e3261964c.pdfIn PDF document text
    • https://limikasideg.weebly.com/uploads/1/3/4/4/134446439/zinidiledek_kigip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_5fb3c6b7b07fa.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/431bfe7b1c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421049/normal_5fb7a18c878cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501495/normal_5fb7119eebb8c.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/68b75701-101c-4cb6-9433-aa991aa24a0e/dakavugewedikoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21cf9f8c-bbfa-47d0-91bc-19a2aeb38c05/65871194679.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/vuvibudajobixefarofoboj.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/unblocked_games_at_school_360.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/23755534003.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/16156191162.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/591554022.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f91e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF91E 19552 bytes
SHA-256: ef3e44cd7e9e926696d52b2d314c79c23c8d892579b4998f15b844ae89c20619
font_00_sfnt_off0000c319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC319 5332 bytes
SHA-256: f356cbde215681beb24fd51bdba4aba11faeeb5409306c0f5020fc191bf555a1
font_01_sfnt_off0000d544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD544 10436 bytes
SHA-256: 75afd3967737e2147a68a2977938849ce0f4dce8baf86f121712e7f24307e36e

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