Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26837655a1983f8…

MALICIOUS

PDF

74.6 KB Created: 2021-03-24 14:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3933e613a22dc488c48ba1c1628ee3cc SHA-1: 589cddc4dc8a89352ecb58f5146642a19b8a37d5 SHA-256: d26837655a1983f863494ea64e188151fffc0ba4c2eb8d99fad9d0ddb689b8c4
96 Risk Score

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 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/strik?utm_term=netgear+wn3500rp+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/kupibetefuko/ijjjiih/como_descargar_scary_teacher_3d_en_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_6033b52361bf4.pdfIn PDF document text
    • http://kudusakepupa.sportsontheweb.net/tizijoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427080/normal_5ffa52e9694f2.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/is_rodan_and_fields_worth_it_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/cjh0dif/interesting_facts_about_dogs_in_afrikaans.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_603405fe10cd5.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/hhO7uij/ikea_kitchen_cabinets_reviews_consumer_reports.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/tezofuretejom/33933889458.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/55741214159.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/pegomafenukogezekebavufa.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/logic_games_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/android_x86_sourceforge.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/happy_birthday_song_punjabi_all.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/clock_quarter_hour_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/93417778824.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_off0000e230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE230 5676 bytes
SHA-256: 25aa5b67b24d7a17c7748be4099aea8efda789856f097ce1afffdc4aa5ce6b2a
font_01_sfnt_off0000f590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF590 11300 bytes
SHA-256: a59f3f61aab6e9f211d2f70ff9f9a93905466dca8e8652b3b8480cc654c9a9b9