PDF malware analysis — malicious · 3efdbda26b2d5c1b

MALICIOUS

PDF

76.4 KB Created: 2021-07-19 05:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 32e563ad26dabaa89266c1e4886b4e13 SHA-1: 8939d9914d6edbd802ff4246bf93246d90a332aa SHA-256: 3efdbda26b2d5c1bc5dc1e50f512b233e134ffd757c24bcd516fab4ed74cbc8f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, some of which are confirmed benign, but the overall pattern suggests an attempt to redirect users to malicious sites. No scripts were extracted, but the presence of embedded URLs and the high confidence malicious verdict indicate a phishing or credential harvesting attempt.

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/y83TWYo-3DA/square?utm_term=two+masted+sailing+boat
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e910d85ebba154a8fb8cc2/1625886936723/23568086404.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee512f07d0587a376450bb/1626231088005/altercation_meaning_in_tamil.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e81a0c687a3d659a4e9e98/1625823756484/easy_henna_tattoos_for_beginners.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0f71b9b6f236119545e3c/1626404635946/combine_multiple_images_into_one_mac.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4d65ac5d9e6782cf305d8/1626658394649/70019320417.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2a890d9389f5e80861a91/1626515600393/janis_to_love_somebody.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f4a01c860d895b48364a6b/1626644508448/gerujuki.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4d66fc4d0d61e6749d5de/1626658416103/zuwobowizuwo.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_off0000c8be.bin` `dbec0c3ad187a806296667b6cb9dd33dbd9ac93253a8b770358633e957e5f381`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8BE	17120 bytes
`font_01_sfnt_off0000f58f.bin` `a7aff6add543db30280bbee7217c5fdd69d71191b5d966d8bdbe628cc5dec922`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF58F	10680 bytes
`font_02_sfnt_off00010de4.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10DE4	16792 bytes

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