PDF malware analysis — malicious · 8a646b88b65169db

MALICIOUS

PDF

85.6 KB Created: 2021-04-27 12:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 4659d506f3a19e22597161676026eee9 SHA-1: 827ab5edba8dde0114910f7fed396337376e64c7 SHA-256: 8a646b88b65169dbc45607f8fa2187bf9045fa47f0646f30b967360810c43936

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake-CAPTCHA lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9919

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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://kuzutuzo.ru/strik?utm_term=magic+bullet+mb1001+vs+mb1001b PDF link annotation
- http://jofipifemu.medianewsonline.com/bopar.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369318/normal_6068badcefff5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407086/normal_602f7ee20e806.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380226/normal_6057bb7b83e96.pdfIn PDF document text
- http://gejudoxe.mypressonline.com/articles_worksheet_grade_5.pdfIn PDF document text
- http://fomijegi.mypressonline.com/czasy_gramatyczne_angielski_tabela.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450041/normal_6031578a8574a.pdfIn PDF document text
- https://cdn.sqhk.co/zoraxiraga/p8S3IRw/healthy_and_unhealthy_food_worksheets.pdfIn PDF document text
- https://cdn.sqhk.co/bejomewuv/GgdIijN/uphill_rush_5.pdfIn PDF document text
- https://cdn.sqhk.co/juwafajem/6heXdgc/24630712194.pdfIn PDF document text
- http://wifisef.medianewsonline.com/76286611778.pdfIn PDF document text
- http://kevarusakoko.mypressonline.com/xivokalil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403556/normal_6019d27ca10b5.pdfIn PDF document text
- https://cdn.sqhk.co/kazaluxi/DcAbmif/synonyms_and_antonyms_word_search.pdfIn PDF document text
- https://cdn.sqhk.co/wofazexej/g3PhcEd/simharasi_songs_ringtones.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_920f14c93b9f427b8964ecb8f42564f9.pdf?index=trueIn PDF document text
- https://ba30dffa-51fe-4caa-9472-6f142403a9bb.filesusr.com/ugd/c2007e_d5627bf6b274482f9b9d5644ae1cb1d9.pdf?index=trueIn PDF document text
- https://584dc5e1-4449-4bca-b3d9-d0e1fa08a972.filesusr.com/ugd/185caa_25d99905ea7c4a75bf110d9a3fc193c1.pdf?index=trueIn PDF document text
- https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_427da5604c6d41dc9eee5b0b774af8e3.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sefipa/wenid.pdfIn PDF document text
- https://s3.amazonaws.com/pidufozu/android_studio_in_app_billing_example.pdfIn PDF document text
- https://s3.amazonaws.com/xamibudasagas/78959549390.pdfIn PDF document text
- https://s3.amazonaws.com/xeroguru/1617242204.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/is_grandma_got_run_over_by_a_reindeer_on_hulu.pdfIn PDF document text
- https://ef9d90ca-5811-4a1c-810e-75bcfae60121.filesusr.com/ugd/a33af7_79162213925a449b837dd71f2f467502.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/fasudikek/creator_code_intro_template.pdfIn PDF document text
- https://s3.amazonaws.com/kiwopusafize/79788406185.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f531.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF531	3092 bytes
SHA-256: `934fcda630a50eaf5f027a3882b88d717dfab10e7c1bfa15947f3284dd3c9574`
`font_01_sfnt_off0001002a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1002A	5088 bytes
SHA-256: `b24a99f8515109acf0471431d8b8095bbc04a5fe017b85e75c611134553ba3e9`
`font_02_sfnt_off00011192.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11192	11952 bytes
SHA-256: `228ea2bab7d6caa434a99f1cebb6a49613fa552085a662246669b1e133500830`
`font_03_sfnt_off00013a08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13A08	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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