Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d7bfb14547d579…

MALICIOUS

PDF

91.0 KB Created: 2021-03-31 07:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f19d474c8d85d5e6b780adad64046a6 SHA-1: 9e4e90707f0a27b00cc21163253943fab57d2069 SHA-256: d7d7bfb14547d579a2dadee05fcaa543fd06880b13a3a4ae0b99b001d553b120
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host phishing content or download further malware. The document body, though heavily obfuscated, contains references to a game and application names, suggesting a lure to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/wix?keyword=boxhead+multiplayer+game+online
    • https://jopuwijexanubuf.weebly.com/uploads/1/3/0/8/130874501/5866c.pdf
    • http://liolika-rsya.ru/francis_of_the_filth_full_bookz4yw6.pdf
    • http://roskycnmx.com/sony_icd-ux533fapzbst.pdf
    • http://dimax.website/fobazobakaderafil4i02d.pdf
    • https://cdn.sqhk.co/sosobita/Lgxrijt/zuzopid.pdf
    • http://afracheat3.xyz/reropalurenitefamobewezum62r7q.pdf
    • https://cdn-cms.f-static.net/uploads/4369629/normal_600c8d991b593.pdf
    • https://cdn.sqhk.co/woleparos/hd6p48w/restaurants_in_drifton_fl.pdf
    • https://static.s123-cdn-static.com/uploads/4380413/normal_60086c2f04b6e.pdf
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/f77ab6e79.pdf
    • https://cdn-cms.f-static.net/uploads/4385206/normal_604983d546973.pdf
    • https://cdn-cms.f-static.net/uploads/4459787/normal_605204dc20392.pdf
    • http://chambreop.xyz/what_is_the_story_of_little_fires_everywherem0poc.pdf
    • https://cdn.sqhk.co/xamitarerivu/RgcejfV/kaxavewewufos.pdf
    • https://cdn.sqhk.co/jabisopomuxo/icOVjaG/radio_fm_online_tamil.pdf
    • http://begdas.fun/index_of_ebooks_book_chm_zip_code6qok6.pdf
    • http://girlita.space/game_of_thrones_bluray_free_downloadof9fo.pdf
    • https://fuzalufukaxod.weebly.com/uploads/1/3/4/7/134714992/9727176.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/pusixa/finegutirupuzuxo.pdf
    • https://s3.amazonaws.com/jonora/restriction_enzyme_worksheet_key.pdf
    • https://s3.amazonaws.com/sinamozagemoger/michelin_guide_san_francisco_sushi.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f721.bin
f92cab978d7dc91b1f9125d7767074753ff0110ba4ab001b900bc9590f26f63d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF721 3588 bytes
font_01_sfnt_off000103d2.bin
1eded4ab4a337435aed47d31933b7922087face4a543d44cee31a0cc8bc4d3d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103D2 5296 bytes
font_02_sfnt_off000115bb.bin
fc8168624da6eef20eb1dcf8a3c3da6951d1c3c30cbdbf27a2e92b4836ad9c8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115BB 10712 bytes
font_03_sfnt_off00013a63.bin
447601f2703f67841fcccdbe9bf587ccbf3cb2ca5e8733d91abe211aac7e3f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A63 16124 bytes
font_04_sfnt_off00014f53.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F53 4324 bytes

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