Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f72f2e70f3b580…

MALICIOUS

PDF

81.9 KB Created: 2021-02-27 22:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b3ca5d261f4611ea23200f93958f3cf3 SHA-1: d4ef1ebc61b45e8ea9ede1b599eb431fd463b896 SHA-256: 64f72f2e70f3b58016d7d6fefdb495a3ae32227e3ba84141174cab3aedb28599
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, 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 or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=how+the+grinch+stole+christmas+book+text PDF link annotation
    • http://nosilekexiwot.mywebcommunity.org/what_is_norse_mythology_based_on.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/I7LjawJ/veverurakodemesururomapa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477173/normal_5feb4f9a970e6.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/friday_night_lights_book_sparknotes.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/does_the_keurig_2.0_k500_have_a_water_filter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452161/normal_600cb82779994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407998/normal_5fea0694783bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463263/normal_5ff5999f292df.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/9265494207.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/ILThcgc/space_armada_galaxy_wars_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/9PlojeG/necromancer_build_eso_stamina.pdfIn PDF document text
    • https://ribosotegolexo.weebly.com/uploads/1/3/4/0/134013239/zafepopulu-xebeliranuxa-maretozojugob.pdfIn PDF document text
    • https://cdn.sqhk.co/taviboku/RsgdibB/13078408788.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/tefigegafaruxa.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/wurivuve/dell_optiplex_9020_sff_desktop_computer_i7-4790.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/worksheet_on_interjections_for_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/81438324820.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/luo_sda_hymnal.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/cambridge_a_level_geography_revision_guide.pdfIn PDF document text
    • http://vufatemosoduv.epizy.com/side_menu_ecommerce_template.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_off0001013d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013D 5540 bytes
SHA-256: 0a1c716f4b18f92c7027755b18a30c8f4f98bdbbeda43ffe27267b45ec27ec0a
font_01_sfnt_off000113fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113FD 11180 bytes
SHA-256: a036678d89cf84beb743f93ce6efd959fda5f42ca99a098f64f3277bbfb9e6c1

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