PDF malware analysis — malicious · a46a17df5c87bffa

MALICIOUS

PDF

71.5 KB Created: 2021-07-15 13:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 3c535b56bb7a3235131c3e65308e47a7 SHA-1: d787d46108530e872aec2d0f1415b08b0473105c SHA-256: a46a17df5c87bffa866b125cb337db1f1a66c1cdd32b4b28f5838cefb9501517

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains heuristics indicating it is malicious, including a machine learning classifier flagging it and ClamAV detecting it as a phishing trojan. The 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to download a payload, likely via the embedded URLs. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.8753

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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/~3/5JeRQhMeIYg/square?utm_term=why+the+rich+are+getting+richer+pdf+download
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8dddb3b63f0898f29c30/1626115549144/pice_of_the_pie.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e96d3b7e7c63344d443a/1625876845708/59519569837.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee89314d490f6727562836/1626245425483/powerpoint_product_key_2020.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a619f901cc159efa8056/1625859609242/prayer_for_tonight_quotes.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee48c7462f394a1e430fdb/1626228935315/mojupuwemanibagaxudan.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed9043493b4338208f69f8/1626181699645/5690395244.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec79b467baa26076bac1aa/1626110388452/32053488917.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_off0000b834.bin` `fece6eba6ee89cfe18700684c896ef225d37ce406d155b13080ee2611f3326f4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB834	15736 bytes
`font_01_sfnt_off0000e094.bin` `d24e118254192f8f02015408205877b46addc6d7c8dd0fe55bf834d63d1943e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE094	10924 bytes
`font_02_sfnt_off0000f9b3.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9B3	16792 bytes

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