Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3edd6a13f3a63cb…

MALICIOUS

PDF

70.6 KB Created: 2021-03-02 21:29:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: dd3f8edad8b12a13763efcc42a11e2d4 SHA-1: dd694ed7a66875e82a1a27a8ae72fdeecb49ee5d SHA-256: d3edd6a13f3a63cb0737a84b209982507f590698b916d092131158a40a6900d9
184 Risk Score

Malware Insights

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

The PDF contains a direct link to an executable payload disguised as a game download, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded link `https://botokaw.ru/wix?keyword=hack+game+apk+download+android+1.com` is the primary indicator of this malicious activity.

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
  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • 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.
  • 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://botokaw.ru/wix?keyword=hack+game+apk+download+android+1.com In PDF document text
    • https://cdn-cms.f-static.net/uploads/4496404/normal_600c251fb68b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5fc73cd2c3d92.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/njfjjIT/dining_table_legs_lowes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374519/normal_5fee37e5890e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487632/normal_600408485803c.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/BCfhjjd/17265523201.pdfIn PDF document text
    • https://cdn.sqhk.co/tisojubew/ihfWRZg/pinivebadanudixuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496372/normal_5ffca0eb7032f.pdfIn PDF document text
    • https://kajavowonedefa.weebly.com/uploads/1/3/4/8/134858644/af243.pdfIn PDF document text
    • http://aycotoro0.xyz/microsoft_wireless_notebook_optical_mouse_4000_drivereabom.pdfIn PDF document text
    • https://rekasefuwe.weebly.com/uploads/1/3/0/9/130969231/bbbc05b646e41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412388/normal_5ff115d00d3ac.pdfIn PDF document text
    • http://pubavamamuzagur.iblogger.org/auto_transformer_connection_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/senagoxosog/Ohejfhc/xebakupax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fca27a3acffe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tegofiv.epizy.com/73480872163.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_off0000ce81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE81 5416 bytes
SHA-256: 8853864fbc987ddf13121d9f3126b078586e053bb93b187f74e7668aaed99939
font_01_sfnt_off0000e0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F2 13816 bytes
SHA-256: 1cc421520f88ffbb787cc1d470b75ac6ff97eb461d5fe2a61d87a53a09817dc3