Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e435b288b71a3a4…

MALICIOUS

PDF

72.6 KB Created: 2021-02-08 07:02:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ae2a79667f8bfd9a48e0ec1251aeb36e SHA-1: 5da734c34084db8b9dfa1dbfada86b7ef1d5f19d SHA-256: 5e435b288b71a3a44bc8cd1c5a7f5166e0e2b00941989638fbe35c384548e626
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is likely a malicious domain used to host or redirect to further malicious content. The document body, though heavily obfuscated, contains strings related to game exploits and application versions, suggesting a lure to trick users into downloading a malicious file. No scripts were extracted, but the presence of external URIs and the malware detection strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=dead+zed+1+hacked+all+guns+unlocked+unblocked PDF link annotation
    • https://cdn.sqhk.co/goxobuve/iiKijT6/tile_flooring_cost_calculator_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/kIsggib/ps4_remote_play_controller_not_working_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/tidaxetosi/jfooiiA/32472959780.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409254/normal_5fcbd4103323c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5fd9aa0b1c2fc.pdfIn PDF document text
    • https://cdn.sqhk.co/fagisuxupinu/hoiePhb/83944198223.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/GIjjRHJ/angry_gun_socom556_dummy_silencer.pdfIn PDF document text
    • https://cdn.sqhk.co/bepesewutu/jchjhbC/cover_orange_2_3-_40.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/wFZ91gc/11542551366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466368/normal_6016dde0bec54.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/jhjgfhd/nitof.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/PG9hejc/patomiberadi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392193/normal_60062ad2ef518.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gLHIjes/vitodatijusovipewo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_601935f4d6cfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gotozowixefe.epizy.com/wezenifobugon.pdfIn PDF document text
    • http://nelifofufotilep.epizy.com/42724286465.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE62 5408 bytes
SHA-256: 852f7f4b7dbdc5f111584c580b92f40003678efdf721e62c0ee1cea85a90105e
font_01_sfnt_off0000f0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 10748 bytes
SHA-256: 21ca09b5a6ab87d61c054057df3a6486620b604f5027b6f01672294dc816ae8a

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