Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda65a241510ef08…

MALICIOUS

PDF

71.6 KB Created: 2020-12-26 07:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cada5f8d099f334418cd6e16c034b527 SHA-1: 6582af6eff16b32fa713ade31a0deb286c5aa746 SHA-256: fda65a241510ef080438fbe51da7ec8562be9ff894a3092e998cf5124e9bda9e
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 an embedded URI pointing to a suspicious domain, traffking.ru, which is likely used to host a phishing page or download further malware. The document body, though heavily obfuscated, contains text related to an online application, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffking.ru/strik?utm_term=nsfas.+org.+za+online+application+2021+unisa PDF link annotation
    • https://cdn.sqhk.co/mewidexe/Libgfig/drag_racing_club_unblocked_games.pdfIn PDF document text
    • https://rawudirujitasep.weebly.com/uploads/1/3/4/5/134588445/duxijaxixujokudurono.pdfIn PDF document text
    • https://rajuvafawomok.weebly.com/uploads/1/3/4/4/134455823/vevulofulan-fosojunebi-xixovezimo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b179af0-536d-420b-b00b-f4cce506a85e/49961327922.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/bluejackets_manual_revision_24.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/088a1209-2bb5-4828-a11c-4145d1aa7551/sony_liv_apk_for_firestick.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/difference_between_anxiety_and_depression.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bea2b35-9ec7-4488-acdc-88b08b59ad0c/magic_johnson_foundation_contact.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4dcd8a-9e8e-4876-a937-05963079d456/79389807795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1781e834-6943-4fef-a52d-ccf38aba098e/newol.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_off0000d8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DC 5560 bytes
SHA-256: 2ba90e3f48f48aa7421240dc6c1785cfd5684304758f4139ebad9212776410db
font_01_sfnt_off0000ebfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFD 11068 bytes
SHA-256: 3a3520840734080996d7bf73f9eee7ae15ade4ad28a9500ebd5877952b1d5d2d