Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2fd2ada82335db2…

MALICIOUS

PDF

78.4 KB Created: 2020-12-26 15:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3e04dc41899858c64ee6c752dfbd1b90 SHA-1: 22f9e5598a7b6f81d3c6c2fb149510572799d1c4 SHA-256: a2fd2ada82335db2934143abe88a948b658491a44d55198cfc5c242885cf398c
96 Risk Score

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 URI pointing to 'traffine.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to furniture design, a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=modern+sofa+designs+for+drawing+room PDF link annotation
    • https://cdn.sqhk.co/rinilafexowi/jd4jJjd/81025862893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_5fad121f72a3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389601/normal_5fe0846827a97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f874e02f1427.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/zirojopemup/baxezifalavifo.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/blank_clock_svg.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/52785900189.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gorukunegufavenexidumed.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/non_stop_christmas_songs_remix_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/guardians_of_ga_hoole_guided_reading_level.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/chrome_canary_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/the_mule_movie_parents_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
    • 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_off0000dd6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6A 5292 bytes
SHA-256: 47a72c399e9a92a0c5e342f0f486780315ab2058f14f591ecbe10534bd8359fc
font_01_sfnt_off0000ef74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF74 13380 bytes
SHA-256: c55d302020f7d3c0e225e0125b60c2ac43083deeaf1fce549a2863eeb353f35d
font_02_sfnt_off0001178d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178D 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1