PDF malware analysis — malicious · 87ac92c31ea5a9f4

MALICIOUS

PDF

78.7 KB Created: 2021-04-06 14:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25

MD5: 1e8f228f307ba9fee2f738b67ec92b00 SHA-1: 4404aaea59dee1727b0eb21260cc0304fb2397e7 SHA-256: 87ac92c31ea5a9f4cf97516c9b58256d3dc5cfe4043e012432a5eadc4f94be28

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, with a primary URL pointing to a suspicious domain that appears to be part of an SEO link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a tactic to manipulate search engine results or distribute malicious content. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document may also attempt to trick users into executing commands, a common social engineering tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

Heuristics 6

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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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://zajinet.ru/award?keyword=beautifulsoup+tutorial+pdf PDF link annotation
- https://dotaterezisal.weebly.com/uploads/1/3/4/7/134771172/sotoxamadu-zamewowij.pdfIn PDF document text
- https://satufimitu.weebly.com/uploads/1/3/4/7/134715308/dejepejexop.pdfIn PDF document text
- https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/kaloged_jeniniwose_munufeduvagiva_fofavupida.pdfIn PDF document text
- https://sufifova.weebly.com/uploads/1/3/4/7/134736026/naxakomevexa_pineril_depilom_zorusuxig.pdfIn PDF document text
- https://pizupunaj.weebly.com/uploads/1/3/1/4/131406403/vejeduvut.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/setikizo/46495695023.pdfIn PDF document text
- https://s3.amazonaws.com/vesubodufisi/angry_birds_rio_apk_mod_revdl.pdfIn PDF document text
- https://s3.amazonaws.com/mojivikapeti/14859642915.pdfIn PDF document text
- https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_490d2f89031e4f70b142c72a1ed85a64.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/povelenavuviw/fevusebo.pdfIn PDF document text
- https://s3.amazonaws.com/kegubinefuda/libepaxiful.pdfIn PDF document text
- https://s3.amazonaws.com/labitajaxatufib/refewa.pdfIn PDF document text
- https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_82823ae132d6416ca7b017ecc8227fd7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jukezeluf/mhf4u_trig_identities_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/sirilagewuga/vapitirelexamemiwituva.pdfIn PDF document text
- https://8717ace1-8174-44a1-9f98-e7cbf9e9ed94.filesusr.com/ugd/14e3be_52b77812292c4d1b860899bae5f51a9b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/rirusozo/how_to_prepare_for_a_high_school_interview.pdfIn PDF document text
- https://s3.amazonaws.com/bitajemisajoz/sai_amritvani_lyrics.pdfIn PDF document text
- https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_e4430157b9174805a769ed9d65a57f92.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zafijukopa/bluestacks_32_bit_windows_8._1.pdfIn PDF document text
- https://s3.amazonaws.com/wizidimawag/xumigojuv.pdfIn PDF document text
- https://s3.amazonaws.com/pilazi/51845791215.pdfIn PDF document text
- https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_1d9c64c9ee3c40c08723e58a2a57c004.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dorulusof/59985749883.pdfIn PDF document text
- https://s3.amazonaws.com/gisujubolidine/avatharam_songs_free_tamiltunes.pdfIn PDF document text
- https://s3.amazonaws.com/zesixefe/spondylitis_exercises.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_off0000f395.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF395	5084 bytes
SHA-256: `1c88b5259dac2f1895322d490dce16889e03732ce9fc07b2595c79165e8a5704`
`font_01_sfnt_off000104f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104F3	11800 bytes
SHA-256: `d39b27aaf06bf4d8720b4ed3114b7fba880647f13a255c8512154bb12c4e0dce`

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