Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0ab0bc1f79fb14…

MALICIOUS

PDF

97.6 KB Created: 2021-03-22 01:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 956b499baced4c6ac53ffa95907fb4a8 SHA-1: 468789f71e466449efa6ac0ca2e873f3a304506b SHA-256: 2e0ab0bc1f79fb146986ad1f85f465eeaba489169c76dfbb57dda5b218673fab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://zajinet.ru/award?keyword=the+pardoner+s+tale+text+pdf PDF link annotation
    • http://naturwows.space/988576520434c1s0.pdfIn PDF document text
    • http://solapp.xyz/are_club_car_golf_cart_keys_universal4uygl.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/lirota.pdfIn PDF document text
    • http://fukoxonezadanom.22web.org/roxuxuv.pdfIn PDF document text
    • http://gakebapenabe.iblogger.org/wikupumidudij.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/zusenanomigerati.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/danifoxiroxupipikij.pdfIn PDF document text
    • http://lelazuw.iblogger.org/gasakuvigipunig.pdfIn PDF document text
    • https://xapotitiguwux.weebly.com/uploads/1/3/4/6/134668809/verisojitizelofoku.pdfIn PDF document text
    • http://keksik24.ru/how_do_i_get_my_permit_if_the_dmv_is_closedxv2ui.pdfIn PDF document text
    • https://raxuzorozejataw.weebly.com/uploads/1/3/4/0/134042373/a1b01b323.pdfIn PDF document text
    • https://pazonijozofax.weebly.com/uploads/1/3/1/6/131606668/6686948.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/zuvom.pdfIn PDF document text
    • http://ogranicbio.fun/tulekejibokizatekuvox21x09.pdfIn PDF document text
    • http://teksol.xyz/98984473529tz4td.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tenurusimuxu.epizy.com/what_vegetables_to_grow_in_central_florida.pdfIn PDF document text
    • http://fidosofesus.rf.gd/bizagi_studio_portugues.pdfIn PDF document text
    • http://xovipofeguz.epizy.com/xofowurinusixukisezuzej.pdfIn PDF document text
    • http://mimarenunev.rf.gd/muxipilibemakosir.pdfIn PDF document text
    • http://jalovunenenema.epizy.com/ibico_ibimatic_binding_machine_user_manual.pdfIn PDF document text
    • http://merizipu.rf.gd/how_to_make_uppercase_in_excel_sheet.pdfIn PDF document text
    • http://sedisukaviz.rf.gd/how_to_reset_emerson_thermostat_1f83c-11np.pdfIn PDF document text
    • http://midugome.rf.gd/xigamosabikupapika.pdfIn PDF document text
    • http://vowatul.rf.gd/rabinigexutoveraju.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_off00014741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14741 5144 bytes
SHA-256: 4c8146be3fe5d8d1b1dd84c12c2729ec6cfc4e6ebc445abece6c35b49fbf8d1a
font_01_sfnt_off000158bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158BC 9564 bytes
SHA-256: 5c8bb4159741fdf083e2f80038ebfb887ecfd77cef4552bcb606f62c7e0a5397

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