Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4c8deb3672414b…

MALICIOUS

PDF

70.0 KB Created: 2020-12-23 18:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2933b91d1fdea241fd350d2f1c1889df SHA-1: d6c5154514717525b80211acf4e28b76b459aaf8 SHA-256: 0e4c8deb3672414b43d28509b2ae953043a615f8ad05e82b6abbc83dca4dcc41
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is also flagged by heuristics as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically identifying it as a phishing trojan. The document body, though partially corrupted, contains text related to 'scatter slots cheats 2020', suggesting a lure for users interested in such topics.

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://traffset.ru/123?utm_term=scatter+slots+cheats+2020 PDF link annotation
    • https://cdn.sqhk.co/niturunajik/27Ygegf/loopnet_nj_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/IVp6hi9/kusekasafiperusisu.pdfIn PDF document text
    • https://vavetupabon.weebly.com/uploads/1/3/3/9/133999816/3954fbff96.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/RJUycAj/fimago.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://rejipunedeze.weebly.com/uploads/1/3/4/6/134652096/1009843.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/hBhcjh6/grand_alliance_order_tactics.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/1906324.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/zirilanexe.pdfIn PDF document text
    • https://zavelodenewiguj.weebly.com/uploads/1/3/5/3/135314669/1046106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f88f0ab4b79a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/90d5fbf4-a2af-4aed-b3c5-88902609b986/burns_high_school_shelby_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/24893519516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec84eed-4b4d-474d-a5e0-40f658f56bb2/fake_paypal_receipt_download.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_off0000d311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD311 5264 bytes
SHA-256: 6375e48875f3a52a447e93bb3ff4218d49e0b16c755025faff1359cb48c1292f
font_01_sfnt_off0000e4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 11148 bytes
SHA-256: 6141062b2746b75eff0db35ee9f9f03d181b2e5a8b4c17b805f284678d164c53

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