Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf24af65cb0ae70…

MALICIOUS

PDF

102.6 KB Created: 2021-07-13 18:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 722035e4424374a0d4f2d749daa82dbd SHA-1: 6511263f89e4536d714880cd2d5de480839fb2ff SHA-256: dcf24af65cb0ae70f082800dca8467370d4616b55f22119cde33a06e3763f342
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://krisoc.ru/square?utm_term=private+rental+lease+agreement
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edac5f37bfc37e3c248fe9/1626188895230/48390803427.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eda4df5a30a704d0c0a9f5/1626186975707/6948143912.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e928b7787dde1a90ae3e73/1625893047871/class_6_science_chapter_2_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8995fa40056e74d2d96a/1626114453595/rixujibelanepawikigegoba.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9131af807f1e152677aa/1626116401229/55373643631.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed93256ebf0d48ea914ce6/1626182437301/xogoz.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecaac6c426b81e83039e6a/1626122950887/climographs_of_the_world.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9181b6e267257943a8021/1625888795478/peditakase.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e80a038ad60325f0c8237e/1625819651857/pain_under_left_breast_after_eating.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed9f07c7772f26c85116d4/1626185479888/xidatanegikokofuwibipa.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_off00012de5.bin
fb0e7613796ab4f019ad58fe9989ee50ab159a4486fb144a64c7b24060c1db1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE5 17844 bytes
font_01_sfnt_off00015d0b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D0B 16792 bytes
font_02_sfnt_off00017522.bin
ef74dc0a545dd3a7ee060e924acf78d43b67441847d96e6a3ea932f8bbfd0056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17522 10400 bytes

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