PDF malware analysis — malicious · 6d807ba26f8e556d

MALICIOUS

PDF

77.9 KB Created: 2021-07-12 20:40:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 54557e16258de191fb29ad09fd65010a SHA-1: 9c80b400397fee4c95bacd0fe5663ee01d2dece0 SHA-256: 6d807ba26f8e556df44cd1f08f5dd116152402281cee850820d224781cf3776f

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 high likelihood of malicious intent. The presence of embedded URIs suggests an attempt to redirect the user to external sites, which is a common tactic for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, likely delivered via spearphishing.

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/eaN1Eb74jJI/square?utm_term=how+to+color+on+pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e89741a604a5574a7f059b/1625855810028/hot_dog_cart_catering_near_me.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8ccb4e5d4731e3e964d48/1625869492120/notes_on_a_harmonica_c.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e87f85ccb57224a64d67b7/1625849733456/tojup.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e85477f9185b76d298c1d7/1625838711854/97138576941.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e91a718915684aa53d0572/1625889393928/subalonixazaxetif.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e940a5f492d21a0f6bd428/1625899173456/things_that_start_with_c_preschool.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7a4ce94d7a30e0546943/1626110540255/newoke.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7c62760c9e2bcf424e92/1626111074933/3_hour_progesterone_only_pill.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_off0000d312.bin` `1ea4895006e3f6ad715d986e8536eda95091733f8d3f11e31e4e52917f518bb7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD312	10136 bytes
`font_01_sfnt_off0000e9cb.bin` `00d46c4b48b26d6831adee4e955512b9a6edd6290fddc971c289cc262ac8cc6b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9CB	15684 bytes
`font_02_sfnt_off00011218.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11218	16792 bytes

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