Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fb664c51a922a6…

MALICIOUS

PDF

82.8 KB Created: 2021-03-02 02:56:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 28320ffbfa5ef2ff13674d1f5dbb625f SHA-1: f3d6c24aff2052afd06d2b5d3f5ed5a355d50657 SHA-256: 20fb664c51a922a67bcd55b5455e78ae044c3264e6aa254ac24005abc26d780a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely aiming to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mezovuduw.ru/wix?keyword=examples+of+transcendentalism+in+into+the+wild PDF link annotation
    • https://cdn.sqhk.co/zikegasenar/icifjfb/nanepimijotetoken.pdfIn PDF document text
    • https://futuratolofuzup.weebly.com/uploads/1/3/5/3/135399438/garokepefib_fomuxulomodomin_tijos_sejob.pdfIn PDF document text
    • https://sigurapefudaji.weebly.com/uploads/1/3/4/5/134576843/pivavujevoxebumik.pdfIn PDF document text
    • https://tafivemusuwivik.weebly.com/uploads/1/3/5/3/135322605/xuxesobin_fadexazeweduwo_poritesa_mejuxemejewi.pdfIn PDF document text
    • http://reduslimitalia.website/do_you_need_oil_to_air_fry_chicken3v2mz.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/dgd2WZW/17354477284.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/zkah3gd/funda_para_agua_iphone_11.pdfIn PDF document text
    • https://ponigeje.weebly.com/uploads/1/3/0/8/130874529/wowitejuwokubenavev.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/vuxalirudidel/adblock_plus_pro_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/bulldozer_car_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/babbu_maan_song_video_telephone.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/kibikaludosazozitu.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/animoto_video_maker_apk_free.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_off0000fbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF9 5512 bytes
SHA-256: 77ab1784402801f583285a921062fa3cef3c281ae2176846218e7af765151287
font_01_sfnt_off00010ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA0 15336 bytes
SHA-256: b99858861acd95c54e5d43d26df78e6bd8643f295167057dc25c8877e6859409

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