Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc14b854e6fea26…

MALICIOUS

PDF

88.0 KB Created: 2021-03-01 00:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 89127131a845c500d4114fbfceac7c3f SHA-1: 8b24c86dc8e5284ba301224d9ff953546344c8fe SHA-256: 4cc14b854e6fea263fa0db962673aa9cc7207a3ed178e567ae5697ecf7a56e27
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, with 'https://zajinet.ru/aws?utm_term=thank+god+for+recovery+quotes' being a prominent external link. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URLs points towards a phishing or malware distribution attempt.

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://zajinet.ru/aws?utm_term=thank+god+for+recovery+quotes PDF link annotation
    • https://cdn.sqhk.co/pufuxogife/eDgcMii/dalurulimutunepefafeto.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483070/normal_5fe17750a5b89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408719/normal_5ffac88134db7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491436/normal_5ff0242d220cc.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/rjighcb/samsung_accessory_service_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407299/normal_5fdf4eda37793.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388293/normal_5fce794abfccc.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/hhfSSKh/mifetorakideruvakotuwug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_601f6a85b620b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416153/normal_5fe9b630300a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393359/normal_5fe34b7dab1e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454561/normal_5fe828e013b09.pdfIn PDF document text
    • http://citrus-fruit.space/golirukijazatenuv1vzim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485718/normal_602628322dc45.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/jh2igKA/litajunajefi.pdfIn PDF document text
    • http://leafester.online/where_is_the_nearest_fat_shacke0kip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472198/normal_601723bd068b0.pdfIn PDF document text
    • http://tavafotuzefox.sportsontheweb.net/marley_and_me_book_characters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415519/normal_5ffbc0e7b93ac.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/how_to_describe_the_moon_and_stars_came.pdfIn PDF document text
    • http://baffer-shop.space/57046496213wox7j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sipanokule.onlinewebshop.net/la_la_land_final_script.pdfIn PDF document text
    • http://pigutun.myartsonline.com/gadoduwovuvib.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAE 5388 bytes
SHA-256: 758de10445e32ff5e8c9ba81fb249b4e604833a952384f6c7aa7d4e2e85c2fd3
font_01_sfnt_off00011df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF2 11204 bytes
SHA-256: 98048e93d24434782e70253d4311f48d570bda55a67b235ff1ae5ab84107d41b
font_02_sfnt_off00014412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14412 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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