Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17db0c0380efb59…

MALICIOUS

PDF

84.0 KB Created: 2021-07-16 13:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7351454ac291070802da35fbe2547469 SHA-1: e8632bbe6c522f264a2f080d6d34842a10302560 SHA-256: f17db0c0380efb59c7120e4f195d0cd8eaaf68c54e3938ee261e5be5f77d693f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a heuristic indicating an external URI. While the specific URL appears benign, the presence of such links within a malicious PDF suggests a phishing or scam attempt. No scripts were extracted, limiting further analysis of the attack's intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://feedproxy.google.com/~r/razvivatel/yapz/~3/kVSxLQpkboc/square?utm_term=symptoms+of+a+slipped+disk
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec89a7ad4a1a22a3e805d4/1626114471639/37273932359.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0f44f6e9a9a494aa29f42/1626403919440/quotes_for_walking_alone.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed3a2836a7a57c1cf0c58f/1626159657296/can_be_gotten.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e813855eabb22f35dcd774/1625822085822/nekatuvojogakam.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e90b7bc14ff043cd5c0463/1625885563621/obstetric_ultrasound_free_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e924dce6a58043b691c17d/1625892060727/jesus_jesus_jesus_there_is_no_other_name_by_frank_edward.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e95cc1b6736875596969c3/1625906369476/timilisopu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7d3299ebc0053f3160cc0/1625805609982/minecraft_servers_that_have_parkour.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed9e0e58c2e0009561596d/1626185231039/wilewotenek.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec904b7dc7460dd09bcbf3/1626116171261/on_the_5th_day_god_created.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e692.bin
dab0c823edce84fe4d5d3e5b3b72d6c52b420eac4592a5be47cc1b8cb109524d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE692 10736 bytes
font_01_sfnt_off0000ff4c.bin
bf8371776ac65ce87c7d61033895bb1dfaf4d19a0afd12084033aedd953c8b99
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4C 16520 bytes
font_02_sfnt_off00012a28.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A28 16792 bytes