Malicious PDF — malware analysis report

Static analysis result for SHA-256 0807d3c0f302855e…

MALICIOUS

PDF

75.5 KB Created: 2021-03-20 04:10:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdd46a4dde515ad9ab492b247eeac883 SHA-1: 7d6f45e03335cef38f286002e1e72940de479f6e SHA-256: 0807d3c0f302855e56eb80898ed3e3e98a41fbe950ef06337a326597f992a5b7
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, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'ponafet.ru', which is presented as a "best pro apk download site", indicating a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI strongly suggest an attempt to trick the user into downloading a payload.

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://ponafet.ru/wix?keyword=best+pro+apk+download+site
    • https://cdn.sqhk.co/pigexebobe/GjbYKib/dailybits_switch_giveaway.pdf
    • https://cdn.sqhk.co/dinigivo/jfihfjB/84471541973.pdf
    • https://static.s123-cdn-static.com/uploads/4449205/normal_5fc6cb024d36e.pdf
    • https://cdn.sqhk.co/xutazazo/jdjcbhh/vexagotolofotefoda.pdf
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/lidujizurobova.pdf
    • https://cdn-cms.f-static.net/uploads/4446390/normal_603c0bf8d087f.pdf
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fc5d13519a34.pdf
    • https://cdn.sqhk.co/xalesikozip/Picd8hZ/buruwejebogebel.pdf
    • https://mumetimobenuja.weebly.com/uploads/1/3/2/3/132302956/599046.pdf
    • https://cdn.sqhk.co/bidelefo/bhh4Fjc/the_blockheads_apk_mod_1._7._3_download.pdf
    • https://cdn.sqhk.co/tevunufoba/fjedhbo/glory_of_generals_pacific_war_unlimited_medals.pdf
    • https://cdn.sqhk.co/wijelukifap/gejjjH1/operation_anka_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4384304/normal_601ffeae1f5c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zifozujiwi/how_to_start_a_new_car_dealership_business.pdf
    • https://uploads.strikinglycdn.com/files/9a0a627b-659d-494e-887d-989d55a7b040/14079986792.pdf
    • https://uploads.strikinglycdn.com/files/9da16243-1829-44a8-a412-b9b29913b543/5077785231.pdf
    • https://uploads.strikinglycdn.com/files/62953d43-3827-47f9-83d1-df8cfa6b9918/golden_song_thailand_season_3.pdf
    • https://s3.amazonaws.com/vezumobigodub/batteries_for_electric_cars.pdf
    • https://uploads.strikinglycdn.com/files/716af3e5-5ada-4351-8515-db9c8a5fbcff/brother_intellifax_4750e_not_receiving_faxes.pdf
    • https://s3.amazonaws.com/xiwevitox/12441151505.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b9.bin
0ffc8c55dbf418f362061f33f1865ff97227e18c29dac6e14b71f80a085f9f3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B9 5160 bytes
font_01_sfnt_off0000fa69.bin
c2962e3533460339be6985b5ad72536667dc8e1676bc813b0ccc8f57c7af989d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 11268 bytes