Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7c9e95e0a881ee…

MALICIOUS

PDF

65.9 KB Created: 2021-03-04 04:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 62806aa6b8a7034727e9cf6af9426dc8 SHA-1: a6844c1933267b96be8f7d78ba7a79f7cc12b579 SHA-256: 8e7c9e95e0a881eed059afa5ac4caca05f1f8392114e345e1594b063b7fca357
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which, 'https://fokemale.ru/wix?keyword=matrices+worksheet+for+grade+10', is directly linked to the document's apparent theme of educational material. The presence of these URLs suggests the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=matrices+worksheet+for+grade+10 PDF link annotation
    • https://cdn.sqhk.co/verexumifo/Ubpghgf/marketplace_grill_conway_arkansas_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/dufimogemeka/gjejhjj/frontline_commando_d-_day_hack_ios.pdfIn PDF document text
    • https://gixoxiri.weebly.com/uploads/1/3/4/7/134707295/tirijavixoru_neramanetuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/7ifjaPu/stickman_fight_unblocked.pdfIn PDF document text
    • https://sibemawiwojaro.weebly.com/uploads/1/3/4/8/134887292/162200.pdfIn PDF document text
    • http://zabodolodak.iblogger.org/27338782560.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/djS2Ahc/65452627447.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/FjgZgeT/download_motorbike_simulator_stunt_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kemivabesu/jJijfji/bigo_live_download_apk.pdfIn PDF document text
    • https://pafudufuwod.weebly.com/uploads/1/3/4/3/134326080/bolubag-gudipoke-jotabemesa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gajutovowitexij.rf.gd/14113993105.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/animal_crossing_gc_fish_guide.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_off0000c4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D1 5608 bytes
SHA-256: a646c44726d40231804d9104869421b1a97759cd954b2de2a6e67a8f00887728
font_01_sfnt_off0000d805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD805 10100 bytes
SHA-256: c9674d115e52dfe2c0cd884e78f790531455ce1e60158d01f153fc18908c1330