Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc6d447c07f7281…

MALICIOUS

PDF

79.3 KB Created: 2021-03-16 05:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6e5e8a5ab3fd25665b9693e27bdb7f9 SHA-1: 72b92be2694db9bfc2a82da3071994cd0c1cd0f8 SHA-256: 3fc6d447c07f7281f911334fb0e0401ae2551e3579ca3fc08daf8aad58264f65
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 URI pointing to a suspicious domain, likely intended to trick the user into downloading a further payload or visiting a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'gender barriers to communication'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

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://bologen.ru/award?keyword=gender+barriers+to+communication+pdf
    • https://sejevijuwev.weebly.com/uploads/1/3/2/7/132712154/depupugoj-zaruneburom.pdf
    • https://bimotozego.weebly.com/uploads/1/3/4/8/134885309/vedowasexegalo_pugivefafarix.pdf
    • http://lnstagramsupportinfo.com/10370205332r6o43.pdf
    • http://azules.ru/2185873671168api.pdf
    • https://gitonuzeku.weebly.com/uploads/1/3/4/7/134764432/5012457.pdf
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/6317fe48ee.pdf
    • https://static.s123-cdn-static.com/uploads/4449622/normal_5ffdae2e54898.pdf
    • http://figuxovutofid.mygamesonline.org/seawater_chemical_composition_mg_l.pdf
    • http://jilet1.club/centrifugal_pump_sizing_selection_and_design_practicesb92md.pdf
    • https://cdn-cms.f-static.net/uploads/4489988/normal_5fd8c0c68dc4c.pdf
    • http://wasatosu.sportsontheweb.net/96063090832.pdf
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5fda5bbf2d6c3.pdf
    • https://cdn-cms.f-static.net/uploads/4482849/normal_604b564205fb3.pdf
    • https://siluvarug.weebly.com/uploads/1/3/4/4/134466410/5be5fa2e6.pdf
    • https://cdn-cms.f-static.net/uploads/4468820/normal_5fd81ad444a6a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vedezaduxi.epizy.com/76186302685.pdf
    • http://titizobilane.epizy.com/31949506963.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1c.bin
bacc51595294b01a43331ecb2d96b0d3fa42dd2cdab7f995c7709af104a79661
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1C 5324 bytes
font_01_sfnt_off00010012.bin
0d7c7b79522f5245d70932de181179374c33f9c3e6e5b29220837ccd21e5fa1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10012 9776 bytes
font_02_sfnt_off00012180.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x12180 4324 bytes