Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9f200da8443157…

MALICIOUS

PDF

65.4 KB Created: 2021-03-31 09:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f5b7a14224050dd29dbf984506bbb0fe SHA-1: 5ac999485199a46657936cd48804bcbd98d67b53 SHA-256: 4e9f200da844315744efbc66b909578caf974df53637d31c679d5a878c3bf393
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://midufefew.ru/strik?utm_term=kenmore+oasis+washer+drain+pump PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366308/normal_604161d636004.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/21271593977.pdfIn PDF document text
    • http://teplotronic.ru/255346500697o6v7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_6020b599abb5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5fd1a890c7005.pdfIn PDF document text
    • http://ses-paypal.com/bugatti_la_voiture_noire_hd_wallpaperf5yfu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lomogas/historia_del_calendario_gregoriano_y_juliano.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/foladewijilonoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e02053-9146-48cc-8e95-7ac36504bc89/17519869810.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/what_colleges_arent_requiring_sat_for_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/lamberghini_song_video_free.pdfIn PDF document text
    • http://satovimowenijor.myartsonline.com/mulinofufesewasefepusezex.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/sheet_piles_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5198240-20a6-44c9-b977-bd44f09421a6/napogadobufilumevokofet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19eed231-95ee-47cb-9b2b-302204b288a4/masegu.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/sheets_of_acute_and_chronic_inflammatory_cells.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_off0000c176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC176 5228 bytes
SHA-256: 11bd717e9babc9f8ec38b6f1a15f2d27219d53cdf5bb68a9d958dbd016e30ba8
font_01_sfnt_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 10760 bytes
SHA-256: 63e12d37ae0092f4078879f2adeeca6e50fbec331f9bdd4ca6fbb273cc7f54ce