PDF malware analysis — malicious · 59da46f7a5fc7a4a

MALICIOUS

PDF

78.5 KB Created: 2021-03-17 23:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: 53ddff4984f272b61fc6e93621885679 SHA-1: f25e035f0d88d6d69eeaf50e5b2503e6d6108f2d SHA-256: 59da46f7a5fc7a4a2ea5f54709de63ad0428d9077ec601db84f79dc82606931a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains a large number of external links, with one prominent URL pointing to 'maypoin.ru', suggesting a link farm or redirection mechanism. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate an attempt to direct users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9967

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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=roxy+camarillo+captain+marvel PDF link annotation
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wetevali/best_wallpaper_for_android_ever.pdfIn PDF document text
- https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_25b72c559b904250bade3b372249c287.pdf?index=trueIn PDF document text
- https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_1bb638eb68144475b98de587d44211b0.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jadudusujuje/puzajud.pdfIn PDF document text
- https://492f55f4-3442-4b37-b17e-39d9f2f0ae8a.filesusr.com/ugd/7dfe85_63df5177f6334d969a97fde261980319.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kesumasaka/darkness_rises_wizard_pvp_guide.pdfIn PDF document text
- https://s3.amazonaws.com/donukadizolin/microplastic_in_water.pdfIn PDF document text
- https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_538193358b444cb8a1581983cc6931d7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pokixovuxik/all_information_about_nda_test.pdfIn PDF document text
- https://s3.amazonaws.com/rokuwapesu/43487279463.pdfIn PDF document text
- https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_1f8c5e16c45d4c36af0350ae13ffe354.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/posufij/best_clock_icon_android.pdfIn PDF document text
- https://s3.amazonaws.com/bugutaj/vat_audit_report_format_excel_gujarat.pdfIn PDF document text
- https://s3.amazonaws.com/laradusa/kukanixadodikixegakola.pdfIn PDF document text
- https://s3.amazonaws.com/bikikanafopavu/76413979933.pdfIn PDF document text
- https://s3.amazonaws.com/vifusupegiza/gce_o_level_chinese_2012_answers.pdfIn PDF document text
- https://s3.amazonaws.com/metubevozisul/19145928840.pdfIn PDF document text
- https://s3.amazonaws.com/fifuto/gifixodosalikolun.pdfIn PDF document text
- https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_622a9e726dd24da1ad6b19183bced6d5.pdf?index=trueIn PDF document text
- https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_df3e77b9b6c147b989a5296e93c52bcc.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/palevijuj/btc_full_form_name.pdfIn PDF document text
- https://s3.amazonaws.com/wupixufekijax/dead_or_alive_paradise_pc_game.pdfIn PDF document text
- https://s3.amazonaws.com/daniwodug/savoxigupen.pdfIn PDF document text
- https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_3859e8ffcb5140e68056d51c2b0396b4.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kufazete/rewuxurixi.pdfIn PDF document text
- https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_b1744b736e9d4da2b328aeeb4ab6930a.pdf?index=trueIn 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_off0000f3ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3BA	5136 bytes
SHA-256: `23bf3c01f030a419b35e746a55f9b2f774e561cfb07115c67c98622bb26cee34`
`font_01_sfnt_off00010535.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10535	11648 bytes
SHA-256: `d0827e42c0276d3d768bf537067ea56167c9f88bf85df52acc27bd68be306cf4`

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