PDF malware analysis — malicious · a17e7d0665c50849

MALICIOUS

PDF

79.6 KB Created: 2021-07-14 02:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 22850fe5a6f43ce121b8057a4627d148 SHA-1: 29870cfee99a674ef3fe1071c7b1cc5a8e220689 SHA-256: a17e7d0665c50849999e704e6f9b1ec92e2cc363d349d91a3ef2efe3c59c01d2

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 payload delivery attempt, aligning with the Spearphishing Attachment technique. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

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=negative+question+answer
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8ce64c158db2a32da673c/1625869924617/i_pulled_a_neck_muscle.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed23679db072196a1f0cbf/1626153831575/nubuwolafijevub.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee04653e011143712c41b6/1626211429320/37695948649.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a6b82d98337f05e22895/1625859768488/zojowuginun.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7e59cc97682122422e52/1626111577786/pifobitakafuririketad.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee0d362d09e34b729c84de/1626213686972/4580612447.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e94e2ac91b61347ea4f53f/1625902634483/43890295795.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e887f46a45ae151fb4d2c8/1625851892794/how_to_break_a_3_day_dry_fast.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8f7ae4ca3800a11894c4/1626115962462/dilavaselarevijorimese.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_off0000d9c6.bin` `b7e0fb0f3671a0624b657dc24a181d04a25d3163bfa6f11c550f31599e318235`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9C6	10612 bytes
`font_01_sfnt_off0000f1fa.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1FA	16792 bytes
`font_02_sfnt_off00010a0c.bin` `442c46004873da1c8c1ec5608d5105108bc613864863869163d375b9653e73aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A0C	15748 bytes

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