Malicious PDF — malware analysis report

Static analysis result for SHA-256 8858b625a1c5bfd7…

MALICIOUS

PDF

70.4 KB Created: 2021-02-15 20:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7fe73c6038101d7c3b0928376cb3737a SHA-1: 94b6f1093883199f379e259440f052653367417e SHA-256: 8858b625a1c5bfd79d0c08a1e03383f32a843dafd6361a81d72b6edebd88898a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=bally+slot+machine+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/xufatirumina/S5x65mR/rotary_tool_kit_walmart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_5fd7893a1b33c.pdfIn PDF document text
    • https://wuzitefagoxu.weebly.com/uploads/1/3/1/8/131856046/lonanubekej-sudokeb-tapap-kufawib.pdfIn PDF document text
    • https://lexeponin.weebly.com/uploads/1/3/1/8/131856664/7179182.pdfIn PDF document text
    • https://cdn.sqhk.co/nesunarimu/iaSyD2s/zejufusu.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/iehgiiu/19342425963.pdfIn PDF document text
    • https://meverelalopabij.weebly.com/uploads/1/3/4/1/134108836/budur_kefeb_vomegok_rurewe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467017/normal_5fdd7f1db5211.pdfIn PDF document text
    • http://1-bog.ru/37065451770obmma.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/FibnJ7N/bomb_jack_twin_arcade.pdfIn PDF document text
    • https://xoxomupufolud.weebly.com/uploads/1/3/0/9/130969418/ximanufive_mesipa_ridep_jodom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501509/normal_5fc8badb643ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403557/normal_6000de1fe6f01.pdfIn PDF document text
    • https://pemifapizu.weebly.com/uploads/1/3/0/7/130776061/2054158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fe05c72ee9c6.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
    • https://s3.amazonaws.com/julexekubaj/43300139183.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/asphalt_nitro_mod_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/kavanosimofonatebabikar.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_off0000c660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC660 5332 bytes
SHA-256: 9ebc3b135adb0d54fe43bdbdf01798d881b17ca58f7e7d56b7e8a2ed65c95052
font_01_sfnt_off0000d862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD862 11508 bytes
SHA-256: 538b9d6d75cb80d567596279942e586788790316a3bf700538ac4701e91dff5f
font_02_sfnt_off0000fe13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE13 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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