Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d90c0ce098e565…

MALICIOUS

PDF

77.0 KB Created: 2021-07-19 16:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5459bfc9366302da0440418a5cee9db2 SHA-1: 7fcfdabd6aea6efb1bc1bd17f95aef57e2341662 SHA-256: c9d90c0ce098e565fb453437259c0a546bb729b76137d05b739401010262de90
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 that leads to a URL designed to appear as legitimate content, likely as a lure to a phishing site. No scripts were extracted, but the PDF structure and heuristics indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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/sq/ugae/~3/aauXj3bnHUA/square?utm_term=vicroads+learners+test+booking
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4ac229c7c9f0ea9a963d8/1626647586934/4411946290.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f350df1db272198f975adf/1626558687337/jupopetogev.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4a2bcc5d9e6782cefd532/1626645181068/how_much_calories_are_in_a_sausage_mcmuffin.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee43d42a4cda17625e714b/1626227668826/nanitaba.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f47689d9389f5e8099b7d8/1626633865266/58360420486.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ea59f492d21a0f684f9b/1625877081747/how_many_days_does_goldfish_eggs_hatch.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2b607bb7e64222df11f58/1626519047565/sidilarixepos.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f02e88b3de5a36b128f8f6/1626353288642/top_verbs_in_french.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_off0000cb4d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4D 16792 bytes
font_01_sfnt_off0000e35f.bin
ab9e745d28cd753397f6acffb319eb37ca3ddfde9d6055d80127fff87d094416		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE35F 16848 bytes
font_02_sfnt_off00010f33.bin
ec42c35b15eae91bdb13a8e1fbbff23234d1ed1347efe80eec9b11a267c8ddc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F33 10744 bytes

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