Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db3e6025643bd66…

MALICIOUS

PDF

75.6 KB Created: 2021-05-28 03:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b46676c473c44cbb230658e59916811e SHA-1: 8fc49efa7286a37f301311d8fcc1fac7912509bb SHA-256: 3db3e6025643bd6657e641c0cd211f30473367e4c8cf89195bc19b9a29ab0f1a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF document contains a lure for a cracked software download, which is a common tactic for distributing malware. It also includes instructions to disable security software, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a download source for a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://xezojetit.ru/strik?utm_term=corel+draw+x5+full+version+with+crack+full+download
    • https://cdn-cms.f-static.net/uploads/4380863/normal_5fe7134a5cfbb.pdf
    • https://cdn-cms.f-static.net/uploads/4485445/normal_603bdcb612d97.pdf
    • https://static.s123-cdn-static.com/uploads/4402712/normal_60047a5af035d.pdf
    • https://cdn-cms.f-static.net/uploads/4502436/normal_605cfc110e486.pdf
    • https://static.s123-cdn-static.com/uploads/4483070/normal_5fca86a1bcebb.pdf
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5fd8a1b16629e.pdf
    • https://static.s123-cdn-static.com/uploads/4462379/normal_6005b36540307.pdf
    • https://cdn-cms.f-static.net/uploads/4404107/normal_6068448f9abc6.pdf
    • https://cdn-cms.f-static.net/uploads/4366350/normal_6049d5b511950.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6cbd8358-09a4-4a6d-9e5a-37a78f7aa2b9/pride_and_prejudice_sequel_read_online.pdf
    • https://uploads.strikinglycdn.com/files/c6942b3c-b212-4440-b53f-e73187cb21d8/70544677991.pdf
    • https://uploads.strikinglycdn.com/files/9d4ca8cb-27f8-4558-b4b2-42ac022bec22/guxesovaxituxutelubebuf.pdf
    • https://uploads.strikinglycdn.com/files/e2b5fcda-adae-4db7-b713-0920916a2fc8/59788854865.pdf
    • https://uploads.strikinglycdn.com/files/7e1e3f80-6a08-47f5-a8f1-13712ac0d00a/i_want_to_walk_as_a_child_of_the_light_umh.pdf
    • https://uploads.strikinglycdn.com/files/77b647f5-0a5b-41ec-b299-0eaa6c2bcd46/rifarofezuzujekapazi.pdf
    • https://uploads.strikinglycdn.com/files/4c0097ef-1657-4770-8de3-bce890766eac/402159657.pdf
    • https://uploads.strikinglycdn.com/files/e7fcf8de-2965-4ef2-9103-bc370cd42825/82639426883.pdf
    • https://uploads.strikinglycdn.com/files/e9076446-a914-4d58-b48f-c2d16e29782c/does_wine_burn_belly_fat.pdf
    • https://uploads.strikinglycdn.com/files/d22db7e1-0b99-4b2b-9ee2-9882ab830433/shark_euro_pro_x_steam_cleaner_s3325_manual.pdf
    • https://uploads.strikinglycdn.com/files/77bf4cfb-19fa-49d5-97fe-8749b6b25678/62495694300.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9fb.bin
038a7d71884d4b19aecd57e849082c6337caf78d54d1dd246862d9cbe26fc7bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FB 5424 bytes
font_01_sfnt_off0000fc83.bin
845289ef44b761696ddeda0aaec7f6f5160efb53e6d489c5e45b89066effa7f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC83 10860 bytes