Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dc75b1669c3a90…

MALICIOUS

PDF

77.7 KB Created: 2021-03-01 02:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 360a7d5b78267e8f044a6d9c41062308 SHA-1: e83be959177d84762d30ff85813b8bbf274a8b9e SHA-256: d0dc75b1669c3a903339e256a2976ae630f05dc9e64e119e6360f728a8618b35
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially unwanted software or phishing sites. The document body, though heavily obfuscated, appears to be related to game mod downloads, a common lure for such attacks.

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://soxebez.ru/wix?keyword=epic+battle+simulator+2+mod+apk+latest+version PDF link annotation
    • https://cdn.sqhk.co/wasefago/gjjjngi/48383506303.pdfIn PDF document text
    • http://juzezudusota.mypressonline.com/yiruma_river_flows_in_you_violin_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/sebudesusoj/sjc5IFI/5037964217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454042/normal_5fefbfb18d96e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5fc9d5f40008e.pdfIn PDF document text
    • http://wineninuxusafu.22web.org/12318187017.pdfIn PDF document text
    • https://cdn.sqhk.co/bawijodol/LQiejal/calculate_car_loan_payment_with_trade_in.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/g0Jvhav/wood_cnc_machine_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vikaxokaso/hbifiej/84111447095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489850/normal_6029978757d70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_6008361fc5e9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_6009ef3ca152b.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/fiHKwgc/55559560635.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://meniwaluraruki.rf.gd/minecraft_mrcrayfish_furniture_mod_crafting_guide.pdfIn PDF document text
    • http://pulawev.epizy.com/1999798368.pdfIn PDF document text
    • http://fedokow.rf.gd/93463475419.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/cuantos_tipos_de_ficha_tcnica_hay.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_off0000e583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 5452 bytes
SHA-256: 78ced45a9d88c2f034ecbc0087d3c687a84abe5ef9f7ee19759d3dc0ac714943
font_01_sfnt_off0000f7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F0 10392 bytes
SHA-256: f00dd76abf82951f31b3a31c0b983cf61be3685b55889677749fe90c6a879b3b
font_02_sfnt_off00011b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B58 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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