Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e72e41592a4d206…

MALICIOUS

PDF

81.4 KB Created: 2021-04-29 23:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 473c855283e88903bb89f2304d966c3a SHA-1: 517c680aebe082bc766aa1b3b1328ee40823d8f7 SHA-256: 6e72e41592a4d206bc70ada9b5e47feecb2a514ddeb5e6ca87a5faed9436de0e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://xajibur.ru/strik?utm_term=harbor+breeze+52+inch+centreville+ceiling+fan+manual PDF link annotation
    • http://epipog.com/46136849731hqt46.pdfIn PDF document text
    • https://firunonosud.weebly.com/uploads/1/3/6/0/136052948/ddda5c4a09.pdfIn PDF document text
    • http://circulyarkadigital.xyz/vazuku1c4a.pdfIn PDF document text
    • http://leyloften.online/51921697908yso1d.pdfIn PDF document text
    • https://xoxizanelanoruf.weebly.com/uploads/1/3/0/7/130740612/vudawalanos.pdfIn PDF document text
    • http://meriline.store/nefizseqns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_605db5526d535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_6056ad1ab90ac.pdfIn PDF document text
    • https://bogobesupagal.weebly.com/uploads/1/3/0/7/130775478/digijotiv.pdfIn PDF document text
    • http://jarobadut.22web.org/volegurozuxinijazonekejus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500692/normal_5fd0976c6ce42.pdfIn PDF document text
    • https://wusitezuredov.weebly.com/uploads/1/3/5/3/135314125/4769984.pdfIn PDF document text
    • http://komejab.iblogger.org/chapter_7_cell_structure_and_function_test.pdfIn PDF document text
    • http://lavkavkusa.store/xepewinarenalmpsjy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1944b265-7ae1-4bdd-b1e1-f0b898a48d2b/22171333875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/291eaa86-7f40-468b-8567-b0604d64143a/how_to_reset_an_old_honeywell_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/98321306783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecf3ee6-ac0e-42af-95c9-ea4ab9c61481/formulas_para_calcular_volumenes_de_figuras_geometricas.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/femofeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/707ffadc-01b7-4a79-b138-7e89a5c8c560/fender_blues_deluxe_reissue_amp_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/reliance_industries_consolidated_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/pagobafusur.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_off0000ff1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1C 5584 bytes
SHA-256: c3f410884ad88f9034d43bbaa3562f7b8f40bf98f41291f1c5f9b22571600e25
font_01_sfnt_off00011212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11212 11260 bytes
SHA-256: d094ab4154f1a76cc2482d3e53f111bf702447bbdf5ba16b3382e661d18b8db7

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