Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c85bc613457b785…

MALICIOUS

PDF

86.9 KB Created: 2021-03-14 11:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: a4b5540a3de3e0b088520cdf4ea37a05 SHA-1: cadd00fdaf75a2eca986fe922ecd880214a1a80a SHA-256: 5c85bc613457b785dad51781f6717fcf7a5635a79a8cc2b293daa3edfdf9b2ba
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a live streaming keyword, suggesting a lure for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://botokaw.ru/wix?keyword=bangladesh+vs+afghanistan+live+streaming+online+free PDF link annotation
    • https://cdn.sqhk.co/danopefasuf/eichaWQ/uber_driver_california.pdfIn PDF document text
    • https://cdn.sqhk.co/korebuxaguz/ifqlWYY/dirac_live_full_review.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/Q5hihbn/pawexudasakovuzisorezudi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483833/normal_60375ccba9cc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471096/normal_602a11333067e.pdfIn PDF document text
    • http://kipoxepufe.iblogger.org/xakevuwur.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/what_type_of_trans_fluid_for_chevy.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/PTifjdB/lovafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415292/normal_5fd85b81b268e.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/zgdhbjc/stokke_tripp_trapp_baby_set_instructions.pdfIn PDF document text
    • http://nanupigib.22web.org/wu_tang_clan_member_castrates_himself.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/nurirojizabebijonenaviv.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/nisamom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478408/normal_600ca1d835511.pdfIn PDF document text
    • http://dalidokumum.22web.org/how_to_replace_pressure_washer_hose.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_6047d717ce40f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubefula/samova.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/guided_meditation_sleep_michael_sealey.pdfIn PDF document text
    • http://nikejubefip.epizy.com/busonid_32_mcg_bula.pdfIn PDF document text
    • http://xebesisogunodok.rf.gd/jabosobowajugerikakiko.pdfIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/briggs_and_stratton_elite_series_power_washer_manual.pdfIn PDF document text
    • http://xikapewegoruzom.epizy.com/99188167759.pdfIn PDF document text
    • http://kuwexugebukutim.rf.gd/juxubi.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/ccsp_certification_study_guide.pdfIn PDF document text
    • http://rajuxibusajebob.rf.gd/diruvubuwume.pdfIn PDF document text
    • http://moxapowi.myartsonline.com/developing_countries_list_2020.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_off00011467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11467 5432 bytes
SHA-256: ef04b1e8b00a18e03de1d96778b9506be45f9bf42f7db9b080bdfbef558a8acb
font_01_sfnt_off000126bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BF 11712 bytes
SHA-256: 3db34ca5928f9e1591c62919240bc07e9a7b6cac0375cc8c543d9fd573940672

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