Malicious PDF — malware analysis report

Static analysis result for SHA-256 6721904c650ad89b…

MALICIOUS

PDF

93.1 KB Created: 2021-03-14 16:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 021dc67ba24d33b3ced21b4408d55cb6 SHA-1: 47192a47132710e65ea0c3218c30094f15cda4dd SHA-256: 6721904c650ad89b2b79ae882098a736708a26675397feaa2c341026ba23495c
136 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing the user to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://maypoin.ru/award?keyword=hijri+calendar+1442+pdf PDF link annotation
    • http://gapijet.scienceontheweb.net/what_is_gods_name_in_the_christian_bible.pdfIn PDF document text
    • http://waranijovuv.sportsontheweb.net/why_is_my_juul_flashing_green_when_i_put_a_pod_in.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/hjjb2gf/wuvosupomatijezowunuf.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/fz8ZXhg/16052555156.pdfIn PDF document text
    • http://subfamjtii.site/how_to_set_liftmaster_garage_codeu79th.pdfIn PDF document text
    • http://fridgeservice.ru/percy_jackson_and_the_olympians_book_set_hardcoverkff4a.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/ji5Cjd7/super_jungle_adventure_mario.pdfIn PDF document text
    • http://goldstein.berlin/mosukuforurirowezajozt2bw.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/rRihjgj/xopivum.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/42701917627.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/gejumulowag.pdfIn PDF document text
    • http://fartook.online/ketalijemarididebazehtrv3.pdfIn PDF document text
    • http://mamontov-net.cc/99980353582xnnft.pdfIn PDF document text
    • https://cdn.sqhk.co/foradimotiri/jhdggji/90848471067.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/pusolefosex/84634678347.pdfIn PDF document text
    • http://jeximojela.myartsonline.com/xinebisure.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/uptet_answer_key_paper_2_set_b.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/this_is_amazing_grace_chords_guitar.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/townley_grammar_school_sixth_form_open_evening.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/apbn_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/4886202339.pdfIn PDF document text
    • http://kewevagisugimuw.onlinewebshop.net/ginajadefalijutowu.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_off00012b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B11 5280 bytes
SHA-256: 9f20a8a2d132eafd8830d068105456bd0f9a926e60879f217959f852b1bb0c95
font_01_sfnt_off00013d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D21 12660 bytes
SHA-256: 0bbfa50a54bdc1b390bd6b89b22e63d4d503021b5e86205444c18e00196300cc

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