Malicious PDF — malware analysis report

Static analysis result for SHA-256 97df1b9006b0488e…

MALICIOUS

PDF

75.3 KB Created: 2021-03-23 09:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c72d7b2654ef437546a273f40ab439e SHA-1: 7cc46a249f1c6a7bb9bcb140a4d625394323dc6c SHA-256: 97df1b9006b0488ea9838033b7931ec0a0d9ddedf5b62a35122fd7f24cc151af
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a domain designed to appear as a search result, likely to trick users into downloading further malicious content. No scripts were extracted, but the presence of external URIs and the ML detection 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://golowaki.ru/award?keyword=google+search+engine+optimization+pdf
    • http://gebevojika.mygamesonline.org/a_dolls_house_quotes_about_gender_roles.pdf
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5fdd32e13bc08.pdf
    • http://tozofuji.scienceontheweb.net/meconium_aspiration_syndrome_adalah.pdf
    • http://alteramaks.world/54651721948rtrux.pdf
    • https://cdn-cms.f-static.net/uploads/4443824/normal_6058646764208.pdf
    • http://cookwellbakewell.com/30378892090frm0f.pdf
    • https://cdn-cms.f-static.net/uploads/4456996/normal_6032232673180.pdf
    • https://static.s123-cdn-static.com/uploads/4484355/normal_5fc8a1a204f41.pdf
    • http://rrrrkkkkk.space/detekaviv2h4iz.pdf
    • http://sberpodarok2020.online/98079436266k73st.pdf
    • http://sosed.market/mugidofokifodewatofasugugk5oz.pdf
    • http://flowerport.shop/chicago_pd_season_1_episode_1ucd3w.pdf
    • https://cdn-cms.f-static.net/uploads/4377115/normal_6026ab74b6876.pdf
    • http://rollernefrit.xyz/gufadajamuganedesujunasen6bie0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6648aa49-deb3-4d6f-81a8-a63cc7a297fb.filesusr.com/ugd/38eac1_d184b0e72c3444fa9f01870b29e0e00b.pdf?index=true
    • https://3ea853e4-7f2b-4fb0-9229-b04907a1e321.filesusr.com/ugd/d94095_2277324b7cd1415788ac5df056a6b5fa.pdf?index=true
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_153094b090064d048aabdd63202ef2f3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e2ffb2b8-e659-4449-bfd5-adf0d3d0ca3f/samsung_series_6_55_inch_smart_tv_price.pdf
    • https://uploads.strikinglycdn.com/files/24d8b0b8-1eed-4436-846a-9e2cf7eb615c/how_does_entrainment_work.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_off0000e6c8.bin
82527f3cc90efb7fba23d1e0339707f01ab7ddca1ee5e431de7de95b1f01c4bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 5652 bytes
font_01_sfnt_off0000f9e5.bin
4310153076378c7d63a5dbcd33abcc4df21bae5f5ffec45b0b8994ac2f0aa96e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 11356 bytes