Malicious PDF — malware analysis report

Static analysis result for SHA-256 747f6e03a08c4e60…

MALICIOUS

PDF

80.8 KB Created: 2021-03-14 01:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 3d01228da3c8fa752a54e13d945c30a7 SHA-1: 486dc5f6d5a8ce2dbbf2f3f20ab475e5b6a67f8c SHA-256: 747f6e03a08c4e60baf3214277ad955248bb59fb2704d1d0d6a9a448f1f12d18
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, indicative of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

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 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.
  • 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://golowaki.ru/strik?utm_term=house+of+night+marked PDF link annotation
    • https://xizimojagetotom.weebly.com/uploads/1/3/3/9/133997363/zilenor_bovofafinikufe_bawiwevewo.pdfIn PDF document text
    • https://lesavudipuvu.weebly.com/uploads/1/3/4/3/134338744/rafose.pdfIn PDF document text
    • https://gimegeje.weebly.com/uploads/1/3/0/8/130873822/sifube_xixon_tuxuvosilipunub_vofulofenone.pdfIn PDF document text
    • https://kobizixudowizeb.weebly.com/uploads/1/3/4/4/134402546/88a6f7ba516f261.pdfIn PDF document text
    • http://gimepar.22web.org/45948462961.pdfIn PDF document text
    • http://samawonuveweg.22web.org/samsung_55_inch_smart_led_4k_tv_series_7_review.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/noxasibesoxinuvelukizafu.pdfIn PDF document text
    • http://latitekiwa.scienceontheweb.net/bwv_106.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xixupokolaxusuv.epizy.com/comprehensive_cxc_french_answers.pdfIn PDF document text
    • https://8fa10226-37c2-454d-bd65-ced70ecbf0c4.filesusr.com/ugd/c34aa9_2e4b629cb9ac4194ac520c2c0cf548ed.pdf?index=trueIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_128a4bb550b5427c82169de71fed73dd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ximupuv/carbon_cycle_worksheet_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/33571910953.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/flight_simulator_x_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/land_appraisal_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/what_are_the_4_components_of_natural_selection.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/blend_words_worksheets_for_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/citizen_promaster_skyhawk_manual.pdfIn PDF document text
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_496f8afc698e466aaf80c58711d9821f.pdf?index=trueIn PDF document text
    • http://towupew.epizy.com/magnavox_smart_tv_wont_connect_to_wifi.pdfIn PDF document text
    • http://zitejilid.epizy.com/93850510168.pdfIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_7079a13171f64c7fad7c3df69396870d.pdf?index=trueIn 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_off0000fed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED1 5312 bytes
SHA-256: 9fc98de2aee72bb3f0ab6dbb1288c094bedbbb9087a91119ed5f7bf386ecb7b0
font_01_sfnt_off000110b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B0 10972 bytes
SHA-256: 7437148fca43b774181ececa0f1cf3adc864dbe6467a86c5bcb81ba062a0ec7c

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