PDF malware analysis — malicious · 6a4f0f62c0ae2ef6

MALICIOUS

PDF

76.6 KB Created: 2021-07-13 02:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 0342a167edb0d0ac9163954829127c9f SHA-1: 3d39d573a2b5ed2973be131a5cf745db034b4b58 SHA-256: 6a4f0f62c0ae2ef61418fcfa5644b4aaf74fdee250e7d56c218bdafa1536fffc

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites. Although no scripts were explicitly extracted, the PDF format and embedded URLs are commonly used for phishing attacks, often leveraging JavaScript for malicious actions.

Machine Learning

Nyx PDF Classifier malicious score 0.9680

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/ZFaGRQ6RLlg/square?utm_term=foo+fighters+inauguration
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f6c2309bd63f3d843a2d/1625880258424/two_toed_sloth_and_three_toed_sloth.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec9c4280388a1034d94648/1626119234985/well_wishes_for_new_job.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb36a9517252e5529aefb/1626125162597/simple_biology_questions_and_answers.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93e7cb68d8f0f4bf938a6/1625898620726/your_dns_server_might_be_unavailable_windows_10_fix.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e937f2025aa46e30d38537/1625896946995/bujumisujipijorabejig.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8a035082d905bfad8fb33/1625858101419/wofesujalo.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e9763b7e7c63344d4473/1625876854778/lenze_8200_smd_manual.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec861740121f56689a4176/1626113559623/24765164499.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c98a.bin` `9ff6d58463f55e731ed39f518726c07c52e9528fcef386687800b04f8ad4a2b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC98A	10524 bytes
`font_01_sfnt_off0000e16c.bin` `611435076ca1f42194378c8864509680d394b02fffab878222be567c69b954bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE16C	16656 bytes
`font_02_sfnt_off00010cdf.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CDF	16792 bytes

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