Malicious PDF — malware analysis report

Static analysis result for SHA-256 6428a67c5a90fae8…

MALICIOUS

PDF

71.9 KB Created: 2021-07-14 03:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2e7ac98ae485c1a16c2725124869d599 SHA-1: e51464731bf4545bbdf90c2849367204a5c5227d SHA-256: 6428a67c5a90fae8b67532c1e8e26e9eec6d7321180935cf47a9d5584f630274
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. No scripts were extracted, but the presence of the URL and the high confidence threat detection indicate a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://oniceh.ru/square?utm_term=marriage+line+in+hand+of+female
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7d22dba333063f17804b9/1625805357308/nekevasokalabibozilofa.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ede2ebba7c7f743c1da198/1626202859516/zugigirebovizinudejerubi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e95c592f3c4128e18c1be1/1625906265584/kaboj.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee14e8fd66ff3739eb4893/1626215656856/68083614504.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edb0d8f827c554fda18822/1626190040155/96012704857.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec93511996685841a9f745/1626116945318/house_rental_agreement_format_hyderabad.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e885564a2d4256068be105/1625851222782/6674407846.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca9678c19ad4998dea383/1626122599430/kubudamof.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee208d33d4654651bb325d/1626218637180/37975570638.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee00d8e11d817478d5c0af/1626210520786/96291827001.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_off0000bb74.bin
89ba8e06cd880f96ee8d01b37a37a08dd51396651764117a24119dc1bb750d0c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB74 15660 bytes
font_01_sfnt_off0000e3d2.bin
df73f6951fae98df3a572abd56e6a21c6c01474509adfac86160361e59a54542
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D2 10528 bytes
font_02_sfnt_off0000fb4a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4A 16792 bytes