Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f29d7f660ea405e…

MALICIOUS

PDF

69.5 KB Created: 2020-12-08 18:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd2851b2dd716867a1f4f52009e92e04 SHA-1: 7798b62e5abe3ffeebe1b56c83fbcf6cf608f2b7 SHA-256: 0f29d7f660ea405e1a824c1b085d1258611849f886b57dd6ecd4a290ad8b256f
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/123?utm_term=bc+finaid+key
    • https://fuletufaxesuli.weebly.com/uploads/1/3/4/5/134523612/4154301.pdf
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/83733.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zuponefi/barbie_dreams_video_free.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/free_ary_digital_app.pdf
    • https://s3.amazonaws.com/jinabisura/71458716740.pdf
    • https://s3.amazonaws.com/xozeb/droid_tv_primetime_subscription.pdf
    • https://s3.amazonaws.com/vexeliku/siradobuzaja.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fd4145a8629dca78754/1606373332445/blank_slate_game_words.pdf
    • https://uploads.strikinglycdn.com/files/3a92783e-5300-41e0-8b52-855c7a906aec/business_communication_a_problem-_s.pdf
    • https://s3.amazonaws.com/sukobogixe/video_bts_melon_music_awards_2017.pdf
    • https://s3.amazonaws.com/ropidadegaxut/resume_template_online_free_printable.pdf
    • https://uploads.strikinglycdn.com/files/1710dcdb-04fb-4ce9-8f76-bbe682bdc125/69198320328.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c597.bin
19345df31d72e77e445e5205d0c820537aaf5bff2fadda11161cb4d2ad27df76		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC597 4524 bytes
font_01_sfnt_off0000d507.bin
2883b05f525744f429a79aded8e7fa24978f1471ad0f2f18b9c10619194847b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD507 11308 bytes
font_02_sfnt_off0000fb77.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.