Malicious PDF — malware analysis report

Static analysis result for SHA-256 e134e49fb4f4d3eb…

MALICIOUS

PDF

80.0 KB Created: 2021-07-19 08:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 57172d26970e97a295743dfde79275d0 SHA-1: 865c82138a46567a40438497aa45c05f3cfcdecf SHA-256: e134e49fb4f4d3ebd77bd1267f8ed6a68979f354d218c2a969e22e8b26025e2a
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to redirect users to malicious sites or download further payloads. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/~3/5Aj-mlxkUx8/square?utm_term=my+name+is+khan+hd+movie+download
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f4e96aa8f65e35b6eb9f52/1626663274335/hard_connective_tissue.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0cc675142327a873cb759/1626393704035/lapavixatejub.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed8fde4182611181b8593a/1626181598287/reliever_medication_for_asthma.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2234fd9389f5e80817615/1626481487410/things_that_rhyme_with_poem.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee3f7a8e3fff2bd3c0b20f/1626226554850/96179639056.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f05d2b173e047f00a5de18/1626365227611/dislocated_finger_treatment.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8349352059f1ec1e7e7e2/1625830548044/21241454483.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee02b936d5170423641156/1626211001803/3rd_grade_science_test_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4edcd2117d935efb8d087/1626664397723/business_model_canvas_template.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1130815846f0d14ea29cc/1626411784889/rudibojiliwoguwonumoket.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_off0000d73e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD73E 16792 bytes
font_01_sfnt_off0000ef50.bin
371261b4d09e65b6d54cc74f0168ca5532719d9e345daa49d67563170ede92df
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 17036 bytes
font_02_sfnt_off00011b9b.bin
da08e000c12edfcf321f8340bb18c50cedca8e11f824889ecaaa39b9f413c964
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9B 10664 bytes