Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8664ca6c8b9a2f…

MALICIOUS

PDF

79.6 KB Created: 2021-02-21 04:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 46d1a63dc6259d9354b3f0c213f0968a SHA-1: 6bf451712987f542e10a2b7ad19a72bd433c1afd SHA-256: 2f8664ca6c8b9a2f08175143a169d2fbad4b1f0e892ae28d44e714ac89976646
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The presence of PDF-specific heuristics and the embedded URL suggest an attempt to exploit users through a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=examples+of+abstraction+in+everyday+life PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374978/normal_5fecba2a623ec.pdfIn PDF document text
    • http://d-youtube.com/rojuzevawilegokekiporazujsnoa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500667/normal_6006ffcf4855c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369764/normal_5fe02d8973f29.pdfIn PDF document text
    • https://xofiguguja.weebly.com/uploads/1/3/2/7/132710561/jegosikafa.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/8vhihhf/tefaxufegepedipebajakus.pdfIn PDF document text
    • http://copyrightshelpcenter.com/distribuio_eletronica_exercicios_resolvidos_9_ano7q1v8.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/4XG90LT/black_girl_halloween_costumes_2019.pdfIn PDF document text
    • https://sivoroxusakigob.weebly.com/uploads/1/3/1/4/131453081/kagom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480893/normal_5fe894088a7f8.pdfIn PDF document text
    • http://itactical.xyz/little_fox_yarn_vixenzwlsp.pdfIn PDF document text
    • https://bovikobugekut.weebly.com/uploads/1/3/0/7/130775803/43459977bd903.pdfIn PDF document text
    • http://mmmmmme.space/how_to_use_12_day_advent_calendarqsniq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490519/normal_60097cacbf2f9.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/vuterijoze/kawakami_gift_guide_persona_5.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/lane_bryant_long_formal_dresses.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/what_are_the_best_paying_night_jobs.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_off0000f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 5628 bytes
SHA-256: 46b997bd2a26d08afaae292928452e9a1a269e3569c6c292eae93fc81fdb6713
font_01_sfnt_off00010cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBA 10592 bytes
SHA-256: 135577e24d853faf3fb51218d68d0ef250de468799e13fa6b6d80e039c127492

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