Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3e7a0e7fb31390…

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 18:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ffa713d1fc481e62f1e9849f24ed60 SHA-1: ef0fe50761c312fb18339bd899ed27a231483866 SHA-256: 0c3e7a0e7fb31390576cfc0bd1ddc1afb3d6701af6652659fd7a172caf0a068b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search results for a specific PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=house+on+mango+street+pdf+my+name
    • https://static.s123-cdn-static.com/uploads/4458618/normal_5ffd1a6487ae6.pdf
    • http://wepovak.iblogger.org/application_x-_www-_form-_urlencoded_example_python.pdf
    • http://nakezubelakibe.22web.org/marshmallow_recipe_gelatin_sheets.pdf
    • https://fedonofawok.weebly.com/uploads/1/3/4/8/134881994/milumej-sufewirason-nilexu.pdf
    • https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/2448215.pdf
    • https://cdn-cms.f-static.net/uploads/4413236/normal_601ab7bd8a366.pdf
    • https://cdn-cms.f-static.net/uploads/4484383/normal_604d95cf91127.pdf
    • https://cdn-cms.f-static.net/uploads/4375891/normal_60280a0a36072.pdf
    • https://cdn-cms.f-static.net/uploads/4457620/normal_6041987a008c9.pdf
    • https://cdn.sqhk.co/nasanoroge/j1ja8ia/guess_movie_through_emojis.pdf
    • https://cdn.sqhk.co/pobijejok/ihf23ij/hmrc_uk_property.pdf
    • https://cdn.sqhk.co/febapaji/hfPlggi/catfish_movie_netflix_australia.pdf
    • https://cdn.sqhk.co/zixapegof/hdaigHS/jiwujoj.pdf
    • http://rarojuso.22web.org/asian_financial_crisis_1997_summary.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://denonewozififuz.rf.gd/bluecoat_aspley_6th_form.pdf
    • https://s3.amazonaws.com/zesotat/sub_zero_refrigerator_troubleshooting_guide.pdf
    • https://s3.amazonaws.com/tanikanaw/bichagadu_naa_songs_com.pdf
    • http://bevivose.rf.gd/network_arch_bridge.pdf
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_daec941507b74e2ea2d637cb33489b29.pdf?index=true
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_b369d5f5f4404bac8e5ed82151171598.pdf?index=true
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_9963dfaca22f4bd8a893a0eb72ddfb7f.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9a1.bin
55d4e9410d60ae909cb4c4b297f0d5ec1afffec7ef8def91eed5c6893378eb98
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A1 5392 bytes
font_01_sfnt_off00010be9.bin
12c8c77d3dbb00a5f0d8fcfb6031ed8591c91a19dda8b4d3599d13579edc2317
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE9 11760 bytes