Malicious PDF — malware analysis report

Static analysis result for SHA-256 942b6b24741cf052…

MALICIOUS

PDF

90.8 KB Created: 2021-03-19 17:44:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a243c674a33ba38a5d358c477d90ae0 SHA-1: 5123d503882451ffe992b718ff8bb3f50bde537b SHA-256: 942b6b24741cf0528736b519e47fdef14c14300c05aec5fba5400bcde84020aa
144 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. Heuristics indicate it uses advance-fee scam and invoice lures, suggesting a phishing or fraud attempt. The embedded URL likely leads to a malicious payload or phishing page, consistent with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/strik?utm_term=box+tops+submission+form+pdf
    • https://cdn-cms.f-static.net/uploads/4488582/normal_60205932b8072.pdf
    • https://cdn-cms.f-static.net/uploads/4424013/normal_603ca9e7e2ce3.pdf
    • http://konalofasu.mywebcommunity.org/best_table_topics_award_certificate.pdf
    • http://shlifovka-pol.website/the_story_of_god_bible_commentary_genesishfny0.pdf
    • https://cdn-cms.f-static.net/uploads/4503791/normal_60406bf14b860.pdf
    • http://repair-planshetov.ru/gauss_meter_flukenx0xo.pdf
    • http://helpcenterbusiness.xyz/405247851879blms.pdf
    • https://cdn-cms.f-static.net/uploads/4445337/normal_601a5b9cc6ab7.pdf
    • https://cdn-cms.f-static.net/uploads/4473616/normal_5fdc64759d563.pdf
    • http://bumawusuka.mypressonline.com/81751348107.pdf
    • http://bupetud.xyz/necromunda_underhive_wars_story_walkthrough8e84o.pdf
    • http://aarbuz.space/movie_trivia_quiz_sporcle97yok.pdf
    • http://tur8osale.site/21546473532cun3n.pdf
    • http://fevinoreniwelik.sportsontheweb.net/yeh_shen_story_book.pdf
    • http://strahauto.website/free_mailing_label_template_wordos42i.pdf
    • http://rilomenininun.getenjoyment.net/biroteb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lezopobigeza/how_to_draw_a_body_easy_for_beginners.pdf
    • https://s3.amazonaws.com/putelekireza/aaaai_case_report_deadline.pdf
    • https://s3.amazonaws.com/pezofut/gitefekameg.pdf
    • https://s3.amazonaws.com/bewibiwat/do_salt_water_pools_have_magnesium.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001193e.bin
a725debb87b4e6ab86d225598401d7ee8ec0068ce19e09b3b3ab48e57ee64df7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1193E 4968 bytes
font_01_sfnt_off000129fd.bin
0f76ed6edab92a0596236f1908b4785178e3c558fd2dacba9e66a889bf1de12b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129FD 11080 bytes
font_02_sfnt_off00014fb2.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB2 4324 bytes

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