Malicious PDF — malware analysis report

Static analysis result for SHA-256 8802ef4cd29aefad…

MALICIOUS

PDF

81.0 KB Created: 2021-05-16 21:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b00214c0a08cfc20d6fc78a47e8c4e30 SHA-1: e9319ca44f377a42557123b281bcc73e4cc573ad SHA-256: 8802ef4cd29aefad34cfb8ff358f60a1494a9f754d427737866bb462ad76b881
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'https://crophysi.ru/strik?utm_term=the+story+of+little+red+riding+hood+in+spanish', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to 'the story of little red riding hood in spanish', aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=the+story+of+little+red+riding+hood+in+spanish
    • https://static.s123-cdn-static.com/uploads/4423728/normal_5ff6b15c8417d.pdf
    • https://cdn-cms.f-static.net/uploads/4402720/normal_6065589383c00.pdf
    • http://fevevafo.medianewsonline.com/vamatemixugorivun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/be4748d4-9d0f-4399-8b68-479fce5b7f07/xbox_one_controller_charger_cable_eb_games.pdf
    • http://jogulele.epizy.com/dr_morris_cerullo_books.pdf
    • http://jodonurinifos.epizy.com/concepto_de_asepsia_y_antisepsia.pdf
    • http://xirozaza.onlinewebshop.net/91927850187.pdf
    • https://uploads.strikinglycdn.com/files/a17e9dba-a985-46f2-9af2-2e200fbc0463/zopififazumesizilaxaxani.pdf
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_6b6ff82c131b46b78a524c11fb075aaf.pdf?index=true
    • https://s3.amazonaws.com/tuletivotarupu/g._a._m._s_degree_full_form.pdf
    • http://gajutar.onlinewebshop.net/antibody_engineering.pdf
    • https://s3.amazonaws.com/bitajemisajoz/tuxifogodudatewez.pdf
    • https://c9254e9e-0e71-498a-8384-ab4c929b52b4.filesusr.com/ugd/0699ff_f89aa6431c4b45bd83483cf5965136e9.pdf?index=true
    • https://s3.amazonaws.com/baxunaf/android_phone_codes_in_india.pdf
    • https://uploads.strikinglycdn.com/files/01dd4df9-a710-418a-bbdd-260e77c84ad9/10173787622.pdf
    • http://fozubogedunok.rf.gd/63802405367.pdf
    • https://s3.amazonaws.com/fejenijovekozu/55131390973.pdf
    • http://pabotojixupi.atwebpages.com/pejebof.pdf
    • https://s3.amazonaws.com/mejigavukolu/free_recipe_downloads.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_off0000fc0e.bin
f92d112b52c5235ac9eeba52c8aa306672de44d825c6c8f1370bd70174864e89
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0E 5356 bytes
font_01_sfnt_off00010e47.bin
3d5234006595aa74879f269118af86940453271191d86ab0a56213a4820e93ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E47 12360 bytes