Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0de197c24981599…

MALICIOUS

PDF

76.9 KB Created: 2021-01-11 12:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: efdb8a0dd41034418f0995baea18cdb6 SHA-1: 9a44b490b9854cdf75b90f8668f17a9d8a666fa8 SHA-256: a0de197c24981599b25b5301a43e2df3a23ea352a7cffdaeafe543472dd260f8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were extracted, the presence of the malicious URL and the high confidence scores from detection engines indicate a phishing attempt.

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/123?utm_term=boss+monster+item+rules PDF link annotation
    • https://site-1176106.mozfiles.com/files/1176106/truth_or_dare_cast_2017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5fc50a18479f6.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/hAiatij/natural_food_and_vitamin_stores_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5fbf65b98e0af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496602/normal_5fecb304f2c4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415935/normal_5fdf5440c143a.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/2jaijjg/nenikime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f8ed2538f4ae.pdfIn PDF document text
    • https://cdn.sqhk.co/fazovivum/ghajagh/dungeon_master_s_guide_5e_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bomifabipi/63665364772.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/former_chairman_of_african_union.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/voucher_entry_in_tally_erp_9_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/vomidesujodi.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/local_television_program_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F6 4552 bytes
SHA-256: 867853cbee8bd92230a363f9c49712ff08bfc720618e59e94df464d653109691
font_01_sfnt_off0000f549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF549 10220 bytes
SHA-256: 69052963ba05949fd7fccb98b5e59456d3266989eec1ec4acd90a79021c9d24b
font_02_sfnt_off00011872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11872 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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