Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d83999fd2e726e…

MALICIOUS

PDF

110.9 KB Created: 2021-02-27 04:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 56d437e987b0e6f0a7c7282378f19fc4 SHA-1: e4d10f532fe1d09f57b1ec805cf42cb3f5de757c SHA-256: 60d83999fd2e726e3d3ebd56bdaf7dd4de12240f857d9994c19d05ae2626732e
126 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection as a phishing trojan. It embeds external URIs, such as 'https://soxebez.ru/award?keyword=why+is+my+service+engine+soon+light+flashing', which are likely used to redirect users to malicious sites. The document body, though heavily corrupted, suggests a lure related to car maintenance, a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=why+is+my+service+engine+soon+light+flashing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fe5cf6b7a253.pdfIn PDF document text
    • http://boost-shop.xyz/60661026342f0hx3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381083/normal_5fc837ee2eceb.pdfIn PDF document text
    • http://gratoraama.website/zaxefomujuguxagisoxilzhlwg.pdfIn PDF document text
    • http://p-kavkaza.ru/m5a97_le_r2_0_fx_83508fu3w.pdfIn PDF document text
    • http://esplus.pro/abnormal_psychology_dsm_5_update_edition_8th_download65ctq.pdfIn PDF document text
    • https://cdn.sqhk.co/panosiritu/gjzLqhe/46427769105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495997/normal_602529d2d1f8b.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/2EkFzIH/free_wallpapers_and_themes.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/jgjiaAO/lebara_australia_network_provider.pdfIn PDF document text
    • http://milanbeachs.space/dragonball_z_episodes_online_freemcl7n.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/alcohol_effects_on_the_body_worksheet.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
    • http://naremijex.epizy.com/incident_debriefing_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/what_is_the_narcotics_anonymous_message.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/geometry_worksheets_7th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/gapaxefowuduwojoreroli.pdfIn PDF document text
    • http://xovapigebiz.rf.gd/final_fantasy_xiv_online_shadowbringers_ps4.pdfIn PDF document text
    • http://dujajadifinux.rf.gd/kw_t680_owners_manual.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_off0001699d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1699D 5256 bytes
SHA-256: da11ea638edf072897cc642e57c3d17eeda4dfad41836267f2263a74080cf7b5
font_01_sfnt_off00017b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B61 10672 bytes
SHA-256: 9fa4fb5f9f82d3b539dcbc4d715b79708898d8c402858a8abee7db3ae2afa8d1
font_02_sfnt_off00019fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FD2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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