Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cbb76f569d4397a…

MALICIOUS

PDF

72.4 KB Created: 2020-11-25 16:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f53de1863e1075788807b9005f0057a0 SHA-1: 2ab1a0649656bbb24a58440f270691a20dd58579 SHA-256: 1cbb76f569d4397a5525fe631a5cd145a282023bb30149e2d2c01d1be8d9ceca
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

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://traffine.ru/123?utm_term=the+phantom+prince+my+life+with+ted+bundy+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426682/normal_5f9f461411728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5f9297b3ba150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449768/normal_5fbdee9b0d6dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pisik/sitaredoxotoverukozep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8102c74-1d0b-47d6-9d79-efe8d6c62896/volatilidad_relativa_de_una_mezcla_binaria.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/speechless_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/wuvunisuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/minecraft_mo_creatures_horse_breeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/tuzatujejufago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a0039df-9b77-457f-aea3-1f20b7c60762/62045649293.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/foviwafujeranowakamuwigu.pdfIn PDF document text
    • https://s3.amazonaws.com/kizuporowefib/how_to_make_speakers_louder_external.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/zelavakiwunajazar.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC797 5500 bytes
SHA-256: 92fc5a4d546246b2de8a285ab2e3989af29f420a9b491b1f1b68538faeda344d
font_01_sfnt_off0000da32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA32 11032 bytes
SHA-256: 9c4ce8e3f322d2d617474749d06edb56e56b546fa73fbd28acc11174a1b6b5af
font_02_sfnt_off0000ffdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDB 16028 bytes
SHA-256: 3e66ce8c90719045bf8f6c8d5f716325bbce29c89c8399c9e71e7e90b46a9b16

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