Malicious PDF — malware analysis report

Static analysis result for SHA-256 aece3c3498ce8a60…

MALICIOUS

PDF

76.9 KB Created: 2021-03-07 20:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 60711e4be4a2afecdbe71c1e07ba61d7 SHA-1: 7d9db0609d9f805b034e35cb8b27c1f29891bf02 SHA-256: aece3c3498ce8a607c3a442905f98ded8eab2cd22940c9acf9d0b462b8657f9b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to a site that appears to be a phishing lure disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded URLs and the PDF structure suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=pogil+cell+size+answer+key PDF link annotation
    • http://unityfree.xyz/blood_clot_is_forming_after_tooth_extraction09mhh.pdfIn PDF document text
    • https://jibokogemi.weebly.com/uploads/1/3/4/7/134767321/95db56131f.pdfIn PDF document text
    • http://wetikufuwigiwox.iblogger.org/new_mary_poppins_movie_musiche_del.pdfIn PDF document text
    • http://vumexovuvelafe.medianewsonline.com/42657103660.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/jizikuremebudekiw4kw6.pdfIn PDF document text
    • http://urolog.xyz/264031071559gtad.pdfIn PDF document text
    • https://kemosufasegu.weebly.com/uploads/1/3/4/3/134348140/2294233.pdfIn PDF document text
    • http://bionatur.space/xilenez51g3f.pdfIn PDF document text
    • https://tonawonigavima.weebly.com/uploads/1/3/5/3/135345065/6108665.pdfIn PDF document text
    • https://petavigavixate.weebly.com/uploads/1/3/4/4/134459614/a92395b5.pdfIn PDF document text
    • https://tobuzedatenet.weebly.com/uploads/1/3/4/3/134322281/6471ec66a6.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/what_is_appreciation_in_art.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
    • https://s3.amazonaws.com/bejenosugede/greater_houston_builders_association_buyers_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/fodexosuwumufusorozoz.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/13150830875.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/musudefudadezidigu.pdfIn PDF document text
    • http://sakamajuxuga.epizy.com/fabizuxijaj.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/xovojogurodofije.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/59546713521.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/29156393274.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/67566229669.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/nivazatijikase.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_off0000e47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47E 4984 bytes
SHA-256: 43e25a1d0347a0dff8dee2d57bb42298f6935455622ffa09d6a3876b89870dbf
font_01_sfnt_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 10152 bytes
SHA-256: 0a763405b37886a76667419f04c876a7345e4edf673aa32eecbdd16fa9e58956
font_02_sfnt_off00011843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11843 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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