Malicious PDF — malware analysis report

Static analysis result for SHA-256 72580c8e6d21a35c…

MALICIOUS

PDF

72.4 KB Created: 2021-05-09 21:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e336f5dd59e1392392600fc1126928 SHA-1: 14cf6c587491407f27ed8ef3a1869d9151df90b8 SHA-256: 72580c8e6d21a35ce558c659c89424b8923f1f92a642cd9736e55b244dfd549b
116 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The embedded URL and the document body suggest a phishing lure related to a product, aiming to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used for malicious redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=quiq+battery+charger+lights
    • https://cdn.sqhk.co/satasevubu/hjbtthi/iphone_8_qr_code_scanner_not_working.pdf
    • http://pimesizawox.sportsontheweb.net/gadevorekemazo.pdf
    • https://cdn.sqhk.co/detazido/iKieie2/27555464512.pdf
    • http://lakuberik.mywebcommunity.org/difference_between_absolute_advantage_and_comparative_advantage.pdf
    • https://cdn.sqhk.co/veladaxuzeba/ifUjcia/mi_musica_es_un_arma_descargar.pdf
    • https://static.s123-cdn-static.com/uploads/4448980/normal_5ffbac9650f74.pdf
    • https://cdn-cms.f-static.net/uploads/4405644/normal_60279995a99ac.pdf
    • http://tepugorotewole.medianewsonline.com/hp_elitebook_8540p_power_supply.pdf
    • https://cdn.sqhk.co/wifinalimow/ZkcidMd/board_game_subscription_box_uk.pdf
    • https://cdn-cms.f-static.net/uploads/4503791/normal_6047a75977667.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zudagiropa.rf.gd/90282128490.pdf
    • http://waminakukivexo.rf.gd/how_to_fix_defiant_flashlight.pdf
    • http://rugiwixet.epizy.com/nifem.pdf
    • https://s3.amazonaws.com/vavale/89785870232.pdf
    • https://s3.amazonaws.com/sorogamat/ayurveda_books_in_english.pdf
    • http://pimoxonevuwewax.atwebpages.com/26824076063.pdf
    • http://telewazikenap.rf.gd/acetato_de_dexametasona_pomada_bula.pdf
    • http://daduzafez.epizy.com/lakurulaninizugi.pdf
    • https://s3.amazonaws.com/serogajugomiji/dd_news_reporter_died.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdb.bin
7df4fc0884454594395045ecccee8c703332a8a4f534705ef70659eee629ec5b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 5492 bytes
font_01_sfnt_off0000ef87.bin
75d0ea8b34df9270e2d2906de9b09017dc6e4520647f17ff922936121711bbcb
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF87 10740 bytes