Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba60e8e3b0090b3…

MALICIOUS

PDF

73.9 KB Created: 2021-03-07 04:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1770048c69bd595aeb07d93179cc1d7c SHA-1: 83b89ff35b0b5f58ba60b4c8a2e307876471eb04 SHA-256: 4ba60e8e3b0090b3e3c9611cdde40dfed18f0cb7eda5b2a8076eaf672f8c08b7
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The document body, though heavily obfuscated, contains references to "jinx meg cabot pdf free download" and numerous embedded URLs, suggesting a lure to download further content. The presence of external URIs and link farm characteristics indicate a phishing or content-distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=jinx+meg+cabot+pdf+free+download PDF link annotation
    • https://numuzobiw.weebly.com/uploads/1/3/4/5/134589566/wazulogedaladosof.pdfIn PDF document text
    • http://gajonedorebuko.mywebcommunity.org/13179758743.pdfIn PDF document text
    • http://lotobajigufar.mywebcommunity.org/48419790893.pdfIn PDF document text
    • https://foxewazijibaj.weebly.com/uploads/1/3/1/3/131379544/5887397.pdfIn PDF document text
    • https://divevuke.weebly.com/uploads/1/3/3/9/133999966/71a6d.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/1231550.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/chrysler_repair_center_near_me.pdfIn PDF document text
    • http://kagogumo.iblogger.org/introduction_to_thermal_and_fluids_engineering_solutions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sexililelaweru.rf.gd/action_plan_to_increase_sales_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/kiss_the_rain_sheet_music_original.pdfIn PDF document text
    • http://dudotofuzariw.rf.gd/where_can_i_buy_char_broil_grills.pdfIn PDF document text
    • http://juwiwigepumer.rf.gd/38700180087.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_off0000e509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 5588 bytes
SHA-256: 0ae6f52c2ea96c3e7c6cfb9a46737c0311056d5cec03a833ae000124922c240a
font_01_sfnt_off0000f80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80C 10064 bytes
SHA-256: 2fed39c579c387a1dbc560235973090b90a8829ded8e8d569ce91b11099005d7

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