PDF malware analysis — malicious · e18777a4339ba3b7

MALICIOUS

PDF

76.3 KB Created: 2021-07-14 04:39:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: ded53b1f0a6e9a3ba52399b6478497b8 SHA-1: 29f6051fc1ab8927a7bf8b8dfcdebcd574bc934d SHA-256: e18777a4339ba3b737afba92a5843f1a9bc1d23b275a826b039611a84d28194e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and heuristic firings strongly suggest it's a phishing document.

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/razvivatel/yapz/~3/0YvHz_IItD0/square?utm_term=not+opposed+meaning
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edeb419779423221e1526a/1626204993974/jack_lord_of_the_flies_character_traits.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e92079b630645a0ef75e08/1625890937355/bezipaburogapaxazevuzif.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee370c2af4c01978fc6e8a/1626224396514/two_examples_of_injuries_which_may_be_caused_by_poor_manual_handling.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e95b8a27127e6804177e39/1625906059103/fruits_high_in_uric_acid_chart.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edbd0784e8e33d4876090f/1626193159388/vaposegodakanitixojorupo.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee3256e7148d06bc701901/1626223190503/another_word_for_many_different.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c9721b22c82f862d6ede/1625868658632/41000284373.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edcc38670c344ea75b1854/1626197048936/care_of_kancharapalem_watch_online.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_off0000cb83.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB83	16792 bytes
`font_01_sfnt_off0000e395.bin` `59809713a81a78e45b26874ae966bfecd867aa853473772ff4a4fa16460f6ae1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE395	16324 bytes
`font_02_sfnt_off00010dc1.bin` `34744c726b0d6f91a347bfaf20d8323be9dbdf33dff7dc2a439bef9dc39d8e9f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10DC1	10568 bytes

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