PDF malware analysis — malicious · 93996c232df8f68c

MALICIOUS

PDF

78.3 KB Created: 2021-07-14 04:39:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: c8731c38222d5b32afec687fe7f42d18 SHA-1: e3a31c23b1270cbfbb24a0aa29da38b51b5215ac SHA-256: 93996c232df8f68cd17299244ae03521b52b9621de5f347aacdd3aebbdec690e

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 presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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/NsX9ihectO0/square?utm_term=name+symbol+and+atomic+number+of+first+30+elements
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec94c180388a1034d87f14/1626117313382/kings_shilling_meaning.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e80ee725441e1b3787f4a6/1625820903362/15452793954.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edd3b1b0089c62dc3d0f9b/1626198961864/gw2_how_to_get_mount.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8d213cb474813b85bb425/1625870868085/antacid_tablets_usually_contain.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9435c320dbd0de2822144/1625899869146/hands_on_my_body_song.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7fdac7e45264421fa0a7b/1625816492251/88734672547.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee2787df274736e0a9f15b/1626220423811/jazupazovopogef.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edb3817c55557fb27f2dd2/1626190721471/in_terraria_what_is_the_best_armor.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_off0000ce0e.bin` `c94434814fbd571463ba8d963c4c138061747af7937803c6376ca65283911ae1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE0E	17140 bytes
`font_01_sfnt_off0000fa6c.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA6C	16792 bytes
`font_02_sfnt_off00011283.bin` `be585d13005c87ac80c5669cbae4081e4a6ad4a8148a91571ca0679e5eb021ff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11283	11260 bytes

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