Malicious PDF — malware analysis report

Static analysis result for SHA-256 01bb9cd519fbbdbe…

MALICIOUS

PDF

79.2 KB Created: 2021-07-14 00:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6e12a37e7eccdf54eff5d6a9aa095030 SHA-1: f812ae6b71db56539cbed0a0d9a38a690feb11aa SHA-256: 01bb9cd519fbbdbe2a5da4ed30a6c6b0fbecbfcce11031cbc5bf82806c619898
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs that likely lead to further malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to trick users into navigating to malicious external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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/iXsW93xxTQA/square?utm_term=pdf+online+merge+pages
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec88e44c0b954f9ea4bab0/1626114276177/feeling_faint_after_exercise.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f20a854c1d3b3484f7be/1625879050208/pandian_stores_serial_episode_1.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e91ccd025aa46e30d2993b/1625889998041/me_before_you_indonesia.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee08057dee9f188f742e0b/1626212357539/bible_verse_to_protect_your_home.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92cf8c0906550d90b910e/1625894136433/hierarchy_of_authority_definition.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec81e84027437375965650/1626112488282/xegize.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e94e2ac91b61347ea4f53f/1625902634483/43890295795.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec76a77e5cd11affcbd45a/1626109607419/indian_tonic_water_for_cramps.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec83de4c0b954f9ea42059/1626112990337/xirosezebezilaj.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eda23aa73a263c31e0cfd6/1626186298149/a_sole_trader_is.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_off0000d4d6.bin
820e0d065a805ee09774c9ae5b6b231e27aed594c02d9aada842aab561eb65f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 16680 bytes
font_01_sfnt_off0001004d.bin
25e9564e63b14cf47cdecc0fcc6838f1c29eb0f952d863b5a64adacc64264fd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1004D 10744 bytes
font_02_sfnt_off000118b5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x118B5 16792 bytes