Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb0b2b1e665901f…

MALICIOUS

PDF

67.9 KB Created: 2020-12-14 18:12:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5f07ad6f3c5dd476b5e62963ac79a7b6 SHA-1: 209abd80ad2581d457a7933323789c7a04462720 SHA-256: 6fb0b2b1e665901f453b42721e746eb0ec8d597b86e04d79e4a18a4dfc8c7e42
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, contains text fragments that appear to be part of a lure, referencing store locations.

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://trafffi.ru/strik?utm_term=nearest+five+below+store+to+my+location PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422373/normal_5fba89ec86f6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410714/normal_5fcd300ff2d03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_5f983f293cc48.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/jezekemunidup/backup_software_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/zitavebiko.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/jiwigagen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a45b789-911c-4c00-951a-3386561db1f4/mejores_series_espaolas_en_netflix_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e4b9832-fb0c-471d-9ce5-83cbdf8eba7c/what_is_fccla_tagline.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d4b9e5c7695ca9b4bda1/t/5fd6fb8f5b1f6f7539ec736f/1607924624979/42877325505.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/nyu_law_writing_center.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eef82ce8-24cd-43c2-9fbd-fae97819002d/8081142292.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06b148139af037642cc0d/t/5fc10fb2a97599144e1cee41/1606487988118/outdoor_chess_board_dimensions.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_off0000cb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9A 5388 bytes
SHA-256: 2b7f30a3c69192e9a8c8f9942c550962529ab39164b93bf4355ad3079cc82ed3
font_01_sfnt_off0000ddfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFD 10960 bytes
SHA-256: e81d4c6ba9048f9a0f6fe3822c292eb561de80b161ea978a5c7f8c42e2506ed0