Malicious PDF — malware analysis report

Static analysis result for SHA-256 9004290cff58aa66…

MALICIOUS

PDF

77.1 KB Created: 2021-07-16 16:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6e935d6dfd63e67e5f9119ed589876f3 SHA-1: 22b2e537810573529f9ba6083939cc62d371be7e SHA-256: 9004290cff58aa6675aab3cfda17d3e66ae0909e194d8bc1becb5baffa8e8417
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The presence of an embedded URI, although currently classified as benign, suggests an attempt to redirect the user to a malicious resource. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point towards a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7604

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/pL_UGxDroB4/square?utm_term=big+red+furry+ant
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9015692abcc18c4f49ca0/1625882966767/3857_s_king_drive.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7b369d93aeb546a12329e/1625797481148/76961485407.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94fd42f3c4128e18bc2f8/1625903060080/tied_up_in_a_black_velvet_band.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_off0000cf28.bin
48f0af113584bea78954b71cbd9d143cba5802e6d380802d250202a76aa87ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF28 10464 bytes
font_01_sfnt_off0000e6dd.bin
dee91f0a90e7aa3437621d9ba0771c3f5a608bc05a496071a3cabf97737ce8cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DD 16356 bytes
font_02_sfnt_off00011118.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11118 16792 bytes

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