PDF malware analysis — malicious · cd4576bfd1ba1a2a

MALICIOUS

PDF

72.8 KB Created: 2021-04-26 22:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: b68dc910958db830e867eb71401fd228 SHA-1: d14165422842520504725f91e654f4a956ffa3bb SHA-256: cd4576bfd1ba1a2a4bdcdc6c247ca69adc7001fb5e7ba08d45044beae20ed5cb

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily corrupted, suggests a lure related to food preparation, which is a common tactic for phishing or malware distribution. The presence of numerous embedded URLs, many pointing to PDF files on seemingly legitimate domains, suggests an attempt to redirect users to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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://ambrose.edu/sites/default/files/webform/vopezupudatirarib.pdf In PDF document text
- http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/2944445507.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/bunovodedodasu.pdfIn PDF document text
- https://vectorcorp.net/sites/default/files/webform/resume/dufovomajaxavekasodulep.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/42416127327.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/tajiwugebewozebukak.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/28695523124.pdfIn PDF document text
- https://www.visitsavannah.com/sites/default/files/webform/90994069376.pdfIn PDF document text
- https://www.blplegal.com/sites/default/files/webform/lolavojirubopikumu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=how+to+reheat+maggiano%2527s+fettuccine+alfredoPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000df3d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF3D	5524 bytes
SHA-256: `c6880f1f24e51c0c101a1f1c22d768cd609567b0571806ad3ed500397cb67759`
`font_01_sfnt_off0000f1ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1EE	10664 bytes
SHA-256: `37c95e59be02e2a302e32d3eb5f95583a7f26052660a8bb7bb4d242fa22245c2`

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