Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ca6744ccbacb38…

MALICIOUS

PDF

80.2 KB Created: 2021-02-22 22:03:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 951787c45e098dd5502bb4ce355d6cd9 SHA-1: d7a54e4c6c06970139c1f28d0fac0c241ec941c6 SHA-256: 92ca6744ccbacb388f27dccb339ca8cb5873c220d11e39c96e8f89e07112c4a0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jottigo.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=is+7+series+samsung+tv+good PDF link annotation
    • https://cdn.sqhk.co/zoxowowi/cijppB3/super_stickman_golf_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454670/normal_5fed982812d32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408704/normal_5fdc4691937e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475572/normal_6018a6781ff68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457563/normal_5fd11be7404b3.pdfIn PDF document text
    • http://tramlaweq.online/kapuradagona4nrrn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445750/normal_5fce79403bc1d.pdfIn PDF document text
    • http://community-day.ru/33423828421lxjyq.pdfIn PDF document text
    • https://cdn.sqhk.co/jadidawa/ighieSf/dragon_ball_symphonic_adventure_2019_usa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458137/normal_5fe9f3c61ab27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484355/normal_60209318e3e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460944/normal_6012839774f06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_6012639901624.pdfIn PDF document text
    • http://dfwshootersupply.com/applied_behaviour_analysisihgwj.pdfIn PDF document text
    • http://new-leggins.site/how_to_lose_weight_while_weight_lifting6gr31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388814/normal_5ff2023137afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414691/normal_5fd70e9ecc83c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA3 5192 bytes
SHA-256: bebbec408837f8ef96d9f95feaa86ac46e7bfffe618b2d0d52c3c44aa62786ed
font_01_sfnt_off00010f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F42 10792 bytes
SHA-256: be6225456406e0dd7eb59fd512d48e06f810f845b2eccad32e89ca2a52de8184

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