Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf08d0da0934f69…

MALICIOUS

PDF

73.2 KB Created: 2021-03-31 16:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 60e08b93ae5271dec88822c556728228 SHA-1: f285ed15c9d76c4a6b2ba34654ea6336d282f503 SHA-256: 3cf08d0da0934f690453c8e3e8ad8834f27317637b269813a4d69eee3fe43719
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it embeds external URIs and has been flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Blog psd template free'. The primary malicious indicator is the embedded URL, which likely leads to a phishing or malware download site.

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://ponafet.ru/123?utm_term=blog+psd+template+free PDF link annotation
    • http://haustova.com/cambridge_checkpoint_science_past_papers_with_answerscqyvx.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/modal_verbs_perfect_englishxo9eh.pdfIn PDF document text
    • http://zhigina.ru/warcraft_3_frozen_throneahd5q.pdfIn PDF document text
    • http://com-connexion.xyz/xomipoxusa0e537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_6039f8124d008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382418/normal_604c9fccd6ec4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476148/normal_605b97f1a4083.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_600be541a789e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/tijiluwokawowegeripimapu.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/audubon_bird_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/77437592368.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/sajosugufexeje.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/android_java_listview_adapter_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65dd79a6-5c84-4d43-ac21-f1938631e245/78068430669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e0a724-1d92-4773-8db6-8b8c6a275214/kusunevudaba.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/36224632312.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/bose_soundlink_micro_bluetooth_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/how_to_cite_the_youversion_bible_app.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/black_and_decker_gh900_replacement_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/mopusajoj.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_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 5408 bytes
SHA-256: 5699e77e24225f27155c5e5f3be04587179f313bd9b38768b53c1de1d7da428f
font_01_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 10600 bytes
SHA-256: 1aeb82fe40517effadb0b2e25db91bfd9c913f5e6b93c7c837513f3df29d5749

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