PDF malware analysis — malicious · 8b410a1bc74dd903

MALICIOUS

PDF

79.9 KB Created: 2021-07-20 00:27:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 50a1a097521a4abe28ba048eed3aca2c SHA-1: b1855ab35693e8f2be4ea72c8bc69931f9369e74 SHA-256: 8b410a1bc74dd903ae8068a3cbfa8b11ee3a991649d0dac9fdaa1f723303d827

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing attempt. The embedded URLs, although many are marked benign, suggest an attempt to redirect the user to malicious content. No scripts were extracted, but the presence of embedded URLs and the overall detection by security tools points to a malicious document designed to trick users.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/~3/5JeRQhMeIYg/square?utm_term=how+many+play+cards
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7e48668ba31612b5815a/1626111560616/70051630572.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f5edbfbb22fe09a2b33fa4/1626729919379/what_is_defamation_of_character.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8bef51102953de5821a25/1625865973944/converter_powerpoint_to.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e88c7d18d2642310524850/1625853053397/zanalizifi.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7de16ad76c09748f9eca/1626111458031/paxizid.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f076b71a769948b7533655/1626371767934/subekadijub.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f5c7341a4e121640f8f272/1626720052118/rulosozewoka.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee40d5a005482cc156a357/1626226902079/todedoxulotolanikasos.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec82eff89f8e700bf753fc/1626112751744/essential_grammar_in_use_download_free.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_off0000d834.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD834	16792 bytes
`font_01_sfnt_off0000f04b.bin` `30140eb7799e4dbe0975095d26f6ffc0fcd3505d67ff114baf77af031b94f276`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF04B	10544 bytes
`font_02_sfnt_off0001084c.bin` `ce55fcfa301ab50ac533c9b358e56463c245bfcbde20f8035230d407c11d5740`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1084C	16660 bytes

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