Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fce148c322e2875…

MALICIOUS

PDF

67.6 KB Created: 2020-11-19 22:00:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 21f53cdd3e143043042a93f736a7e4f9 SHA-1: d7fe701d8b66299e1865fcccd33ebc8ff6d8fbb8 SHA-256: 4fce148c322e28756720c5adbcab58f521b9be592c6d8561ef054c05f6d7ce4d
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=sides+of+a+45+45+90+triangle+calculator PDF link annotation
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/89282fd09bd4a0.pdfIn PDF document text
    • https://kuruxodevudule.weebly.com/uploads/1/3/4/7/134728431/gamufixifolutal.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/3e41e778-edb5-401a-b015-8b21b0d9e6b6/61820202989.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/11315847716.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/grand_canyon_great_unconformity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ec4c77-a216-406d-9310-1d25a40ce7ed/lfs_devir_kesici_6r.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/soul_of_might_farm.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/king_arthur_flour_asiago_bagels.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/jazz_blues_piano_licks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c6ab1bc-b545-40cd-bc0d-90ba5a026698/22193589161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdbb64e2-a5c2-438e-8adb-723316efdb13/classical_sociological_theories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70d51c9-5ced-4a89-96cd-5e6ffcd6451d/ambasamudram_ambani_full_movie_hd_tamilrockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35a293a8-5669-40fd-8bce-fe6633d4ca5a/99047051506.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_off0000c845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC845 5804 bytes
SHA-256: 6b1201867e431e13b9acccc0e35e81257ef8671eebfceace81d02739badc6553
font_01_sfnt_off0000dc18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC18 10880 bytes
SHA-256: ca085ed4fe1343655de9689526a5c385bc9a54c6e300290623408622e4def03a