Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be00da504cdc4ee…

MALICIOUS

PDF

76.1 KB Created: 2021-05-23 13:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8a49ebf5f31910afb63c20108af3ffcd SHA-1: 72df0c773ef0df2956e6cdde8b4843fbaeed857b SHA-256: 0be00da504cdc4ee7b7fed474998cdd9d87b5e2b537d2e196d2691ef360d89e6
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9996

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://fokemale.ru/strik?utm_term=winrar+32+bits+windows+7+mega PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5fe52ad13642a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_604015691d214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_603220ee392c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_605661d0c7af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_6019ff14ea8dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5fcc298087251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_604da23e2f082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_60262f3c711b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5feb9bbe3edc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_5fd7e67e4a2a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426413/normal_602681638e241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fd79d9e8511b.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/a8155c47-80d6-4dbc-b0f2-608f59c6616a/ransom_of_red_chief_audio_recording.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb99b0cf-5d2a-4f05-943b-854a73391627/jelolad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/364f045e-05b8-432e-959d-49b50fe46ede/86794912426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa1bd71-f251-435a-bab1-3186b6e5ea5e/xivuxaruseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff76c32-e1ab-4474-a599-bd188251b516/zejapotakawubazafisoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7dbfc6-06f3-4f66-ba2e-c9339165f953/74016570350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b48345d7-a95a-49ad-a1c0-3258f6988fbe/what_food_is_10_calories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0dbe8c-cf9d-44dc-b874-5c9a30d214af/bufaxuzuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b4e810-0b9e-40ea-b8c8-736e006cb1ba/dell_mouse_ms116t.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8cde23c-7b3f-45db-b862-cbebe654d075/ronipoxijapuwonag.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_off0000e592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE592 5732 bytes
SHA-256: f6b525aee2161f4496b88639e2571d4c139bc4018e8194a8191d3aa666b203fe
font_01_sfnt_off0000f91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91F 13260 bytes
SHA-256: 18eff5989fdc522d80b82f178a44719ee18a824cf096f28813e06979f165bf3a

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