Malicious PDF — malware analysis report

Static analysis result for SHA-256 517a6dcac793f7e3…

MALICIOUS

PDF

66.7 KB Created: 2021-03-10 11:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5239cd53f3c33cbeb0c1ae738270d367 SHA-1: b78675ebb7d4c280009626aa2c0a11ef008d06b1 SHA-256: 517a6dcac793f7e3afcfb2d62068b2cacfc884f1e7e6eccb470c669b01a6ea5b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. ML and ClamAV heuristics confirm the malicious nature of the file, with the ML classifier scoring it very high. The embedded URL is the primary indicator of this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=ganesha+atharvashirsha+pdf+telugu PDF link annotation
    • https://cdn.sqhk.co/suzagofi/ijc3jhw/pikmi_pops_flips_walmart.pdfIn PDF document text
    • http://koxoteripuxafo.iblogger.org/what_are_the_3_types_of_heat_transfer_what_is_an_example_of_each.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/87754796057.pdfIn PDF document text
    • https://cdn.sqhk.co/gefeloxo/hXjdjf0/doluw.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/j2Hjc0r/ligasemamoli.pdfIn PDF document text
    • https://cdn.sqhk.co/narobalof/ijOhchd/lewagexir.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/aia6hbc/gibbets_2_bow_arcade_puzzles.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/40ce416b-96e2-4752-9fdc-9c7ab0d89260/9767703713.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/converse_plataforma_bota_el_corte_ingles.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/wireless_mobile_battery_charger_circuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2140402-2caa-463e-b767-6a6b942c79d3/12537150388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c15cf93-3f55-4604-9303-c57d5a6deb8b/71920604366.pdfIn PDF document text
    • http://lepalatibig.epizy.com/81433067136.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/mituwibipexajakizaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/304da20d-3ad9-4be2-bb6e-1e094398bd86/how_do_i_stop_my_adt_alarm_from_beeping_when_i_open_the_door.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ac49d7e-96e1-417d-8308-848e01b3ff09/baofeng_uv-5ra_greek_manual.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_off0000c95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95B 5396 bytes
SHA-256: 4eb712ded6d81cadfb50fa7db605478b7228091fc65896758016b0d466539513
font_01_sfnt_off0000dbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBB 10072 bytes
SHA-256: 500fe3cc5e24a9d7d2fbfeca4a9a29b2d806ccefa0d4f157de25d323e0067f99

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