Malicious PDF — malware analysis report

Static analysis result for SHA-256 62513290f1fa69b0…

MALICIOUS

PDF

86.3 KB Created: 2021-03-03 03:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5d5e2828344ea1734a0a01f3563af977 SHA-1: 20454789091f8c33da2e24e13a1e9ad014289195 SHA-256: 62513290f1fa69b05d2beea97d1f803cbc772ba6ade66cfc3d29ab3634ba6a5e
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URL pointing to 'baarspo.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the idea that the document is designed to trick the user into performing an action, such as downloading a file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/award?keyword=monsta+island+czars+the+next+1000+years PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384308/normal_5fe01fbd83fff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411682/normal_5fdedb644e389.pdfIn PDF document text
    • http://hq-cleartv.info/authorization_letter_to_get_documents_templatefo0ls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_60152a7dab398.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490127/normal_5fe4d29195625.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/9GMjdgj/detulizem.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/dJihlhb/71551534032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491725/normal_6008ff0f320dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469126/normal_5fe11a6792f62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479678/normal_5fda07537e0b0.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/fii6G8s/mod_steven_universe_in_minecraft_pe_mashup_pack.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420767/normal_5fc7b2b0f12a2.pdfIn PDF document text
    • http://bukibiroxofin.22web.org/lofif.pdfIn PDF document text
    • https://cdn.sqhk.co/xogixute/qjcvxFc/deadly_medieval_arena.pdfIn PDF document text
    • http://fortuneo.biz/sennheiser_ew_100_g2_manualxo7kq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwuvugu.epizy.com/galepajibitekuvuwavikuned.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 2980 bytes
SHA-256: 5d44f490efa38564332ac28490846ee63ad85d8f6f70389d9853df3232bb1a0b
font_01_sfnt_off000105a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 5448 bytes
SHA-256: b4c2a51fd2d1950b5be501dfa2b9ef6351a05db9e41ab0337aa3b4c24a4b064a
font_02_sfnt_off00011842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11842 16556 bytes
SHA-256: ba8341ce12138c59c1857118dade8a92045c46b1d7dd94672ad83245bebc8ec5

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