Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd853775999441f3…

MALICIOUS

PDF

76.1 KB Created: 2021-02-21 14:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d26fb3d01009c6c43eceb32ecfd61bb7 SHA-1: 9eb159a3d73b4b9d865028932e169952d9251fbb SHA-256: fd853775999441f3b47a4de82d8d96f731b38ba94fc42fd2ccb7a703dd9d3637
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://seumenha.ru/123?utm_term=does+the+stock+exchange+close+for+christmas PDF link annotation
    • https://cdn.sqhk.co/dutigimomana/dhgOgck/color_splash_fx_premium_apk.pdfIn PDF document text
    • http://kulinar2020.site/gods_of_egypt_movie_downloadum1o4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371248/normal_5ff4b2f60a5b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424647/normal_5fe51da304c1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469850/normal_6027ad7eed8b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_5ff8695195ad8.pdfIn PDF document text
    • http://freshnatur.fun/robot_ultimate_dark_dragon_amazing_toy_fightersh2c7a.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/jixiXgg/wuxetumugewobibojezezifu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370072/normal_5fd1416ba2bba.pdfIn PDF document text
    • http://ubsvp.com/woodshop_rental_brooklyn8bwbf.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/ajdJgj9/elephant_trumpeting_sound_effects_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/iaigghm/life_coach_salary_new_york.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/muzedaner.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/47489266316.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/gavowa.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/44988808695.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/gexapugasig.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/kawujaradofenoxid.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/nuguxiwe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE33 5212 bytes
SHA-256: b1aaccaa86882095d2365997d0f80846d244f439b3c45ad315134a8695362e56
font_01_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 11088 bytes
SHA-256: 52243d2999ddaa0e9e9339bef570b616ca3b602343c59f3724b1e3ecd22ea1d0
font_02_sfnt_off0001150e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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