PDF malware analysis — malicious · f900d33e4b0a5a08

MALICIOUS

PDF

75.5 KB Created: 2020-12-25 09:38:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: d56bec348dc683484ff1345a96e950a4 SHA-1: 6354ba51e6f1be2c8a455f24a88798608024f3ee SHA-256: f900d33e4b0a5a081eb397db4933e1f76d367fffa25fd458e20a10c005795616

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or further malware. The document body, though heavily obfuscated, suggests a lure related to 'abdominal strengthening exercises pdf', aligning with common phishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/aws?utm_term=abdominal+strengthening+exercises+pdf PDF link annotation
- https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/watiwuzudop_xuren.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413986/normal_5fb41d169348b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368250/normal_5f9210aa3a2f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420907/normal_5fa572138bffa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391037/normal_5fa286335a181.pdfIn PDF document text
- https://basurujilitafap.weebly.com/uploads/1/3/4/5/134595952/7439264.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482424/normal_5fd77a81632cc.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369308/normal_5fe1b36d27963.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408323/normal_5fe40d8eb72c3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/zaxuledo/editable_calendar_templates.pdfIn PDF document text
- https://s3.amazonaws.com/laradusa/acmarket_apk_ios.pdfIn PDF document text
- 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_off0000e886.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE886	5764 bytes
SHA-256: `49c9d4c88ccd7e9a3084790f4415c78d17cbc5165dab06ec8a1af87433917577`
`font_01_sfnt_off0000fbff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBFF	10300 bytes
SHA-256: `8091eea814085b64d28bdc85e52e765d14a330e41cf278e9099b32d201132776`

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