Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97cb044d4c7d9f3…

MALICIOUS

PDF

74.0 KB Created: 2021-04-04 19:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 40b4574819c1b77f23dc9a12a15631e1 SHA-1: 74c03b885964c8d84a5e1079fc6e4c2644667be9 SHA-256: c97cb044d4c7d9f3705cd0badf9c30aebd1acadb20d1c730938946a3a4f93fcc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a URL related to the value of a used PS Vita. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an external URI and the nature of the content suggest it's designed to trick users into visiting a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=how+much+is+a+used+ps+vita+worth PDF link annotation
    • https://cdn.sqhk.co/jaziwuke/MFNbjbl/96397851370.pdfIn PDF document text
    • http://pejazadajenatew.getenjoyment.net/rikakaduwopakusubujazerax.pdfIn PDF document text
    • http://ludshop.xyz/57513535046g16jf.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/icHjfRe/kakareva.pdfIn PDF document text
    • http://souve.me/25402346078a6w3r.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/36584491991.pdfIn PDF document text
    • http://1-bog.ru/sifeboruvulxv0y8.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/Xifhhjh/xisuwurejivozumijapit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_496bce181ae946ba83f804ce8aa6de6c.pdf?index=trueIn PDF document text
    • https://a35aa970-3e4e-4c20-be1f-53d10001bce9.filesusr.com/ugd/af4e73_d6ea407242c5420eb3454dd17d2471e5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e19572-944d-496c-b0af-773f01196173/what_is_bills_of_exchange_in_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/bugs_auto_liker_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6136c2e1-9f99-4c02-b30b-0958524522fb/what_is_a_sig_p226_enhanced_elite.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/93644649144.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/local_hero_theme_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/76867767581.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/afari_afari_song_ringtone.pdfIn PDF document text
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_f2078a458201444a8b745e677e0657db.pdf?index=trueIn PDF document text
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_625b0995ba824394954bfcad40801d31.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2369e1c3-9e7b-435a-9292-c17479e552ca/44332535272.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_off0000e1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 5396 bytes
SHA-256: e6971b00a9b74f01bf2bfc834e12feaa8a61811d16384dd0d08d576538ad04b4
font_01_sfnt_off0000f443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF443 11240 bytes
SHA-256: ffdd5d5becacc9eb47a0ae4db975f7a54604e1c207f6e1122d7f9d7d200b1fe9

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