Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fccc8b012f1545…

MALICIOUS

PDF

78.4 KB Created: 2021-05-14 10:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5b8ae8740ad2f1a59538dbbf4e5e8e56 SHA-1: 26429157231a279fb3ac174096a734efa390a981 SHA-256: 34fccc8b012f1545e8d7cff47a21f3ef9806614c771d7271cb9575f3c73c7c15
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically targeting 'law training contract salary uk', suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site for further exploitation. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/strik?utm_term=law+training+contract+salary+uk PDF link annotation
    • http://bofinaposo.iblogger.org/59222021656.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/tilukotibujigu.pdfIn PDF document text
    • http://muvetepogewa.22web.org/61074242283.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/how_to_program_harmony_550_remote.pdfIn PDF document text
    • http://vorakumezaxof.mygamesonline.org/65461985069.pdfIn PDF document text
    • http://musomojil.mywebcommunity.org/58484380281.pdfIn PDF document text
    • http://dorugatutaxovi.scienceontheweb.net/zuvadefojejizunobu.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/36913148909.pdfIn PDF document text
    • http://lakenamazaga.iblogger.org/18464768014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosimamasi.epizy.com/73561042642.pdfIn PDF document text
    • https://de99934f-f465-4d69-af5e-14f317c0a7c6.filesusr.com/ugd/4fea5c_213773212828493d9be898273a1cc3df.pdf?index=trueIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/tezukirojajovigol.pdfIn PDF document text
    • http://lijixame.epizy.com/nugorokajururotatile.pdfIn PDF document text
    • http://litofafowiralo.epizy.com/37831712860.pdfIn PDF document text
    • http://wijetifosoxi.epizy.com/somigofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/378f3676-6ba3-453a-a5b0-b75c30b54362/ingersoll_rand_compressor_customer_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96c3fa58-33da-4716-85d4-c9f10be2b284/dotijumunemetirijoluxa.pdfIn PDF document text
    • http://wofabor.rf.gd/67446188266.pdfIn PDF document text
    • https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_e5cbca730a114c9a80b49ea306568712.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 5164 bytes
SHA-256: bc786fd408d1d4414bb508f118aff8b09661a4de571d4740ba371ea7c9b337fe
font_01_sfnt_off0001065f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065F 11288 bytes
SHA-256: 4735edd5293f604a388efc39c19c171deb0ac8c02096d16115c28c689449dd94

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