Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9d667d902ceeb9…

MALICIOUS

PDF

144.5 KB Created: 2021-07-13 22:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d27afaf4f10d429795692c38024022b9 SHA-1: 8f30cd61b70de5bcf99184165a784528e2750f15 SHA-256: 8f9d667d902ceeb95099922a560ee8f7d03ae3b33cad25477f925b499d8f91cd
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan-d2568dad23a94d95'. The presence of multiple embedded URLs, even those flagged as benign, suggests an attempt to direct the user to external resources. While no scripts were explicitly extracted, the nature of the detection and the embedded URLs point towards a phishing or malicious content delivery vector, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3349

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/sq/ugae/~3/qQn0o4eTdIQ/square?utm_term=elementary+principles+of+chemical+processes+4th+edition+solutions+manual PDF link annotation
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edd544895aae42f65943bd/1626199364140/dofewifi.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca1863631fd4ab8191282/1626120582280/vikifetolawutijomazuk.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edad5af90efc25ed75e4c2/1626189146536/quotes_on_measure_of_intelligence.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7aeca86d8930991a3fb1c/1625796298955/travel_books_reading_answers.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D244 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001ea5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA5B 11160 bytes
SHA-256: a93503276eb65ed4a72e1e3ea327204bb93a5956b733b482aac3b51801e652a7
font_02_sfnt_off00020444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20444 18432 bytes
SHA-256: 73ccfbb967fc88804e9c23fa330f1d3b95c8cbb4b6f2a591c445baff819b64d1

Open this report in the interactive analyzer, or submit your own file for analysis.