PDF malware analysis — malicious · 1cef682773c7bd95

MALICIOUS

PDF

74.4 KB Created: 2021-02-27 07:49:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dc5b43b43934dc14dfeae57eb2991fc9 SHA-1: 96ebfe19020fea8a6dbbb958727862b7fa8f84b4 SHA-256: 1cef682773c7bd95f307682d768eeff835a2494e687bf7fc34447aaba4c1c369

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=thomas+jefferson+football+stadium', which is likely a phishing lure. The document body is heavily obfuscated, but the presence of the external URI is a strong indicator of a phishing attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=thomas+jefferson+football+stadium
- https://static.s123-cdn-static.com/uploads/4477181/normal_5fc9548f21652.pdf
- http://mif-smeh.space/10155699222ns4bw.pdf
- http://huseyincanx.com/3914162241s39tl.pdf
- http://copyrightprivacy.site/raxonunatozatkf1d0.pdf
- http://b0xberry.online/professor_messer_220-902_course_notes3a2oi.pdf
- http://summ-green.fun/gisoburokujomup9aaae.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jobavo/nokuridilulunutig.pdf
- https://s3.amazonaws.com/ximupuv/chamberlain_liftmaster_professional_1_3_hp_not_working.pdf
- https://s3.amazonaws.com/towakog/define_a_dilapidation_report.pdf
- https://s3.amazonaws.com/kobivimelelo/69283180672.pdf
- https://s3.amazonaws.com/nowokil/jefoza.pdf
- https://s3.amazonaws.com/fopalew/xevapufugawozig.pdf
- https://s3.amazonaws.com/sazomo/muzuzifotejopawapatif.pdf
- https://s3.amazonaws.com/nimuwet/antares_auto_tune_efx_vst_free.pdf
- https://s3.amazonaws.com/pobixedele/ielts_question_describe_your_family_answer.pdf
- https://s3.amazonaws.com/pokixovuxik/zututidafunef.pdf
- https://s3.amazonaws.com/wufujudisu/hua_bechain_pehli_baar_song_pagalworld.pdf
- https://s3.amazonaws.com/mipeboro/contract_compliance_checklist_template.pdf
- https://s3.amazonaws.com/mejobu/74159901406.pdf
- https://s3.amazonaws.com/muvarelo/beboxovunuzomazumevofiro.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e868.bin` `f8ee3af8a9f2da04469e43de65943cdc17226c440b4d9e745427e87ce0c12bd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE868	5312 bytes
`font_01_sfnt_off0000fa44.bin` `bcb5421acaf1a91a66c5e030c895ef529fd3910d7ead967c293702f3c7d45045`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA44	9980 bytes

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