Malicious PDF — malware analysis report

Static analysis result for SHA-256 64dc80e258fc1f05…

MALICIOUS

PDF

84.9 KB Created: 2021-05-21 07:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7619ee4411406658ce9140a374b59ac4 SHA-1: d6342089b9049f19472b4c7db88b600abf624625 SHA-256: 64dc80e258fc1f05a2ec9443d02d38bca8dfbdab15610113bd97bb1dcf050689
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, aiming to trick users with promises of prizes or funds. It contains a large number of external links, with one prominent URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download of a second-stage payload via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/strik?utm_term=holographic+will+alberta+sample
    • https://mupasifuv.weebly.com/uploads/1/3/2/6/132680827/vutum_rutaminopoze_dibebumimituv_pubuwuvodutubu.pdf
    • https://ginuwedisifixel.weebly.com/uploads/1/3/4/7/134744372/fepal-lamasesivorix-beginuvaja.pdf
    • https://cdn-cms.f-static.net/uploads/4450043/normal_606a8ad6e0ab6.pdf
    • https://lotutomoze.weebly.com/uploads/1/3/4/3/134309944/7509463.pdf
    • https://cdn-cms.f-static.net/uploads/4410211/normal_605c0fac3f7ff.pdf
    • https://xinofebew.weebly.com/uploads/1/3/5/3/135305957/degudilimiranu.pdf
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/9a7340.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/2b663fb2-5edb-4e13-943d-b75a55ae911a/11355321099.pdf
    • https://uploads.strikinglycdn.com/files/a586ff1b-1b37-4f0c-80d0-faddd454bd38/best_car_sound_system_in_south_africa.pdf
    • https://s3.amazonaws.com/wobuzisibal/20947091781.pdf
    • https://uploads.strikinglycdn.com/files/f7b59430-7d14-439d-8aea-4b7cf17fd3b5/pasuworukoke.pdf
    • https://uploads.strikinglycdn.com/files/9a228b09-a37a-4db9-bf14-542c877cf99e/danby_compact_refrigerator_manual.pdf
    • https://uploads.strikinglycdn.com/files/cd217a52-eb3e-4887-95b4-591914236f4f/vilazinarulubowameninod.pdf
    • https://uploads.strikinglycdn.com/files/05a6d5d0-6789-46fd-9110-efd1fa4226e1/kabosak.pdf
    • https://uploads.strikinglycdn.com/files/d3b10fb0-edbd-43de-bb9d-79729d9fa161/how_to_read_the_bible_in_one_year.pdf
    • https://uploads.strikinglycdn.com/files/f0fa946f-e77b-407e-95ea-809bc1cb8ed1/is_the_2010_camaro_ss_a_good_car.pdf
    • https://s3.amazonaws.com/kabisebax/54562727086.pdf
    • https://s3.amazonaws.com/toliwudalamem/birds_chirping_sound_effects_free.pdf
    • https://uploads.strikinglycdn.com/files/27daa020-414e-49cb-bb58-dcc617565ffb/sql_server_dba_tutorial_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/c10ce58c-891c-4cee-9203-04c70567f039/gabajide.pdf
    • https://uploads.strikinglycdn.com/files/7b65732d-57a2-44db-9776-b8c14a920cc9/67664125827.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001021a.bin
290b3838569d7e1ec6dc21cf3cfeb874baa11ca337cc03ae1885b098b25d28ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1021A 5224 bytes
font_01_sfnt_off000113e8.bin
19746185b9cac383de61e36bc69ddd23ece70f3d911d6620f404b5495567bb56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 10600 bytes
font_02_sfnt_off0001380a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1380A 4324 bytes

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