Malicious PDF — malware analysis report

Static analysis result for SHA-256 559370d5776ddd72…

MALICIOUS

PDF

80.6 KB Created: 2021-02-23 01:38:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: afbe957c7b386a26ba61f6598b52eb58 SHA-1: 3e8644a909f494da299e2659b53df960ee8e9199 SHA-256: 559370d5776ddd72faae2bac79daed6138cf673ff124d5997a3e94e68c2657b3
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and is flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to 'The Hobbit download', suggesting a lure to a malicious website. The embedded URL points to a site that appears to be part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=the%20hobbit%20download%20in%20isaimini PDF link annotation
    • https://cdn.sqhk.co/fuvazuginu/cUxgj4W/perfect_slices_apk_android_oyun_club.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/5XMhchf/m_word_wallpaper_hd_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gipirukanut/hcEEheC/wetes.pdfIn PDF document text
    • http://taptopbot.com/operation_alamelamma_alage_alage_songfn4w6.pdfIn PDF document text
    • https://cdn.sqhk.co/vebapejun/wHDL8id/dead_effect_2_pc_gameplay_part_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_601973b3a9f08.pdfIn PDF document text
    • https://cdn.sqhk.co/fazituku/heggfgj/bilotamodoridupasesazo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459341/normal_60343af956bb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_602742c9e1639.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445882/normal_5fdea92681525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416496/normal_5fd3cef8b2fea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500679/normal_5fde5f2d174c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417644/normal_602ea8fdf3bad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/foneniz/belepujebumoxovibobut.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A5 5152 bytes
SHA-256: 1073d1b3cc1ec39725f99b49dbcc7483820015601d208c6dcb001680d60c13de
font_01_sfnt_off0000fb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 10672 bytes
SHA-256: a0b62d92dd23df821c5dcd0579aff25e8135ad5ada4afc553bbf8f104e84bbd1
font_02_sfnt_off00011fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD8 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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