Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ce351bc6eb851e…

MALICIOUS

PDF

78.2 KB Created: 2021-03-28 05:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eff8a9fad58ecb932b0fe0ce0d04b167 SHA-1: 249b17b656d708028f59d02448d0b07bac39893f SHA-256: c7ce351bc6eb851eb0547188e0ec52e7e7e63e6bbc0210b3e8e2bf789d97337a
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 to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though obfuscated, contains keywords suggesting a lure for puppy sales, which is then used to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/wix?keyword=teacup+french+bulldog+puppies+for+sale+in+colorado
    • http://reduslim-italiaoficial.site/ca_final_costing_new_syllabus_notesykrg2.pdf
    • http://xamawodub.22web.org/81888430552.pdf
    • http://lonedowubolile.iblogger.org/davowoxukemizat.pdf
    • https://puruvafapazono.weebly.com/uploads/1/3/0/8/130815059/keroz.pdf
    • http://euromarket.pro/game_resident_evil_2_mod_apktqmfa.pdf
    • http://rakijizesegag.22web.org/vuridodijim.pdf
    • https://muwegejise.weebly.com/uploads/1/3/4/2/134265646/ridagulavomava.pdf
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/raluj.pdf
    • https://tuzisufuga.weebly.com/uploads/1/3/4/4/134458332/mipetugozefena.pdf
    • https://zokibiruxe.weebly.com/uploads/1/3/5/3/135326092/1846921.pdf
    • http://braco.ru/audio_technica_at-_lp60usb_manuallwr3g.pdf
    • http://nupufuzomofima.22web.org/meaning_of_biogeography.pdf
    • https://cdn-cms.f-static.net/uploads/4369313/normal_604955c4cfa25.pdf
    • https://static.s123-cdn-static.com/uploads/4446394/normal_5fec6b25e4b47.pdf
    • http://parkingtest.xyz/tipijomisizot8bk1z.pdf
    • https://wufewevaso.weebly.com/uploads/1/3/1/4/131453291/5989504.pdf
    • https://gakulenem.weebly.com/uploads/1/3/1/4/131437742/8333947.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://toramowajo.epizy.com/81691616137.pdf
    • http://kejipokope.rf.gd/glandula_de_bartolino_funcion.pdf
    • http://lisokabosexipep.epizy.com/nisupes.pdf
    • http://latilofu.rf.gd/molarity_and_dilution_practice_worksheet_answer_key.pdf
    • http://nupadamemal.epizy.com/sugigifujov.pdf
    • http://tapejufujol.epizy.com/39086737585.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_off0000f417.bin
638f964660f7c4dff50f50a119ee27cb7741a6628d4b005c343981a03d1e5888
pdf-font-stream PDF embedded font (sfnt) at offset 0xF417 5504 bytes
font_01_sfnt_off000106c2.bin
eb353fce85db252df41bc71e411633b0d60f00b7304b3bda25d3429c0d3b5185
pdf-font-stream PDF embedded font (sfnt) at offset 0x106C2 10496 bytes