Malicious PDF — malware analysis report

Static analysis result for SHA-256 a874a6da627bf013…

MALICIOUS

PDF

73.1 KB Created: 2021-02-11 23:37:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dce863b7e819f109aecc2d81a242bedb SHA-1: 220b086840320e1e89e25398eccb771cdae3c471 SHA-256: a874a6da627bf013048ceb4a20e13b363b240324bfa2bbcbdcbe6880c3f8c6cf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=pulsar+watch+battery+type PDF link annotation
    • https://cdn.sqhk.co/zoxowowi/icyOQEO/need_for_speed_no_limits_download_size.pdfIn PDF document text
    • https://sipinawuzukefo.weebly.com/uploads/1/3/1/4/131410227/dijolizopuwikom-xoxexivubigu-xokurewasejevur.pdfIn PDF document text
    • https://noduxulab.weebly.com/uploads/1/3/4/9/134901810/b619a945362299.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/gigdEif/murder_in_the_alps_energy_mod_apk.pdfIn PDF document text
    • https://losopaxirusegu.weebly.com/uploads/1/3/0/8/130813120/dapodofokapisukuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/iq1idhj/sanicon_dump_system.pdfIn PDF document text
    • http://xikumidevulofo.iblogger.org/vopifabefurudefekada.pdfIn PDF document text
    • https://jabibodusap.weebly.com/uploads/1/3/2/6/132681053/78c705d0291989.pdfIn PDF document text
    • http://sifulodidikit.22web.org/gloomhaven_brute_enhancement_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/PieT1Xs/90702177435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389097/normal_5fccb1f8eb830.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/aZgejgv/small_business_plan_template_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404299/normal_5ff5e28dd5cf7.pdfIn PDF document text
    • http://kiwikinixibiko.iblogger.org/ladumukilusibapepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bedawisanono.epizy.com/gelujufalogipalekug.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_off0000e1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C6 5356 bytes
SHA-256: 94b902ed8237e2c2116d604da5d4eaace13a82f40e670245fc90aafdadf31174
font_01_sfnt_off0000f40b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40B 10360 bytes
SHA-256: f05e49f3c437c65107467b7ee527c71ab1991473c9fae83ce08efadc9f8be0a2