PDF malware analysis — malicious · f0d0b8c3aee51933

MALICIOUS

PDF

74.2 KB Created: 2021-07-12 21:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 02195568db3600df058bb01b448903dc SHA-1: 1e6ce42d02a19d9a4d7e51143b420da810626c9d SHA-256: f0d0b8c3aee51933dde5ef05cd27d38bb1a809184c0994f5323136baade2237d

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 high likelihood of malicious intent. The presence of embedded URLs suggests a phishing or redirection attempt, likely to deliver a secondary payload or lure the user to a malicious site. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript for malicious purposes.

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/WVKuihPcy9U/square?utm_term=how+to+answer+why+do+you+want+to+be+a+doctor
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7d76668ba31612b56680/1626111351037/talokogatikozijuwem.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9217f8fb24157da70127b/1625891199267/1080p_tamil_video_songs_free_download.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e932da3b7e7c633450dd5d/1625895642139/weight_loss_tips_free_download.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8211288cf71862a96a82/1626112529220/q_skills_for_success_4_answer_key.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9122527127e6804155fe5/1625887269759/rekiwedolidonaniv.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7d58cc97682122421236/1626111320825/mood_off_meaning_in_telugu.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8427cc9768212242ccf6/1626113063772/boy_scout_leadership_positions.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec864d8300fd66e1969657/1626113613383/fotuwoko.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_off0000c454.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC454	16792 bytes
`font_01_sfnt_off0000dc66.bin` `6bbdedc12953df85e6ccc9f8fa173a43d3791718f406339676a9197ab94d8af4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC66	15400 bytes
`font_02_sfnt_off000103c8.bin` `18c94134e731f45ba08ba85cdf0243b87f2bb0e4ce7ae210cdba3e0449e254a4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103C8	10760 bytes

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