Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e279341915e69c9…

MALICIOUS

PDF

79.1 KB Created: 2021-01-05 11:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 583d2545e7632632d2bef7ddacc55b2d SHA-1: d27bd6df7232d59255e8620cf11a0a780446fdb9 SHA-256: 0e279341915e69c95d8c87051a942779630788e783dc40ac92b45c0526c7c982
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing or malware payload. The document body, though heavily obfuscated, appears to contain keywords related to weight loss and a specific tool, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=fat+joe+weight+loss+dr+oz PDF link annotation
    • https://cdn.sqhk.co/xubuguxovim/ghja5Bi/telehealth_companies_market_share.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/2cd3f025-5449-46b7-93a9-2e50c9eaf445/dojufaxulirelulo.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/fujigefowu.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/33399636289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5af2b21c-8a94-4130-aced-a6fff573e5c6/ruparuzanorafonafikuroj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b72f51-8745-4a95-b4fb-5b6a0f95f6a9/50038663246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ce07df-57c1-4a71-84dd-0706fe770d2f/best_free_launcher_for_android_tv_box_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/juwolupigibovevitikik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8a4c3f-bbc0-4482-a5db-46641a601523/the_joker_full_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ccb569d-aae7-4b9c-823d-426529f36c61/jifodumifaraforo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18393b4-80b7-40f6-9081-a6490f259291/gejudigunorupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3439d636-3772-42d1-a1d0-904c3c11ee04/12785520937.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_off0000f8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D6 5260 bytes
SHA-256: 995cfbe069877a84791aa320ad4d92c9730feb17d65304f7daa2ecc260bbdbf4
font_01_sfnt_off00010ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD2 10756 bytes
SHA-256: 59bf3d2ab20008cbe98a48201cf0f783b1b4ac8e54a5961ef296548da8a4644b