Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa3e675d21232ee…

MALICIOUS

PDF

76.5 KB Created: 2021-03-31 18:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b4b81db048cd5231764a66b000aef6d2 SHA-1: 525929fcbd0342279949236d0fb3afda67fad265 SHA-256: aaa3e675d21232ee6872a5f2ec06f80b2c8188c9c6da05cd16045735da97148b
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 0.9992

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://kuzutuzo.ru/123?utm_term=b.+o.+t+full+form+in+electrical PDF link annotation
    • https://cdn.sqhk.co/jumupebuvi/c2hbV7I/stick_tennis_world_tour_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pulobegefuzi/ggibZ00/xuxejem.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/hbehdJ1/logo_quiz_answers_level_57.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/bWgizjh/caulipower_margherita_pizza_ingredients.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_6046f5e601883.pdfIn PDF document text
    • https://cdn.sqhk.co/migukosodaza/nEijcif/stars_hockey_game_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/miweguzeg/hahh7vj/japanese_words_to_english_translation_list.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/Whd0ojj/54430444672.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/hcghjdP/hungry_pigeon_brunch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389108/normal_5fdbd58979f9a.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/fXDgjdx/zefetixufidofapaweserag.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/5n14iht/44598942947.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/VvhagcN/dhoom_restaurant_surrey_bc_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/rinovizifim/dxhibjc/91098215435.pdfIn PDF document text
    • https://cdn.sqhk.co/zufutetuwume/VRXhihj/vitamix_5200_refurbished.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495262/normal_5fe83b759249a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417530/normal_604dd36a57432.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/subopukomanaw/brooklyn_nine_nine_season_2_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/31895774069.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/juragipokazimabakereg.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/banting_shopping_list.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/rajupuselelememikizasoron.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/26469480794.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_off0000ed02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED02 4928 bytes
SHA-256: 3dd8189e618e39f23ee1d77beab52d252c69e2d29e7ca53db4bbe3c9e38451ca
font_01_sfnt_off0000fdb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB6 11292 bytes
SHA-256: 02c9c047b16cc620d7a084017907a3d8685bcf158ec58d05d40e4df829ded5d9

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