PDF malware analysis — malicious · 31ceb504bf8c29ae

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 08:20:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 0d595c533074ce1c101dd127ae6da848 SHA-1: ca5d0ced236b62a546d5cfdbef8e0e50b2db0db4 SHA-256: 31ceb504bf8c29ae3a14c7fac0e59690ab7e503beede9f38cdd4e568b3c01b06

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document contains numerous embedded URLs, with a primary focus on redirecting users to external sites, such as 'maypoin.ru', under the guise of providing a legal dictionary PDF. The presence of multiple disposable hosting links suggests an attempt to obscure the final malicious destination.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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/123?utm_term=black%2527+s+law+dictionary+10th+pdf PDF link annotation
- https://cdn.sqhk.co/xolizoxime/0lgekAA/govesobuxetoba.pdfIn PDF document text
- http://gosologesegob.iblogger.org/background_blue_png.pdfIn PDF document text
- http://tekeriset.iblogger.org/7235159777.pdfIn PDF document text
- https://cdn.sqhk.co/muxaferamet/bjdXcJ1/11674405912.pdfIn PDF document text
- http://alania365.ru/extending_mendelian_genetics_worksheet_answers1t3b4.pdfIn PDF document text
- http://hayatevesigar.online/ferigebezimatenetel2p06.pdfIn PDF document text
- http://sexugaweguko.iblogger.org/78474206410.pdfIn PDF document text
- http://50offstore.pro/nedumopedofipozixisuwanij1tbq.pdfIn PDF document text
- http://lnstagramcopyrightcenter.com/nupamevamtbih1.pdfIn PDF document text
- https://cdn.sqhk.co/bidelefo/ehgmhiP/telegram_messenger_desktop.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://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_ffcc117b2dfc481286d866f720d2fa6c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/a5248adc-1761-4d9b-a189-df7e85a8677f/sonidanebeluv.pdfIn PDF document text
- https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_558e87714ae34872b331d118a712df71.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/1e965822-1a6b-4423-a597-68eb3eba5f94/nomamexejenevedefisaxot.pdfIn PDF document text
- http://nazonuretowu.epizy.com/natirenisevanifuwepe.pdfIn PDF document text
- http://kajilurugo.rf.gd/what_is_a_scantron_sheet.pdfIn PDF document text
- http://tufeloxe.rf.gd/97669569969.pdfIn PDF document text
- https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_683df99609674fb3a71e90abf608f10d.pdf?index=trueIn PDF document text
- http://zefuxaninegug.epizy.com/bollywood_movies_full_hd.pdfIn PDF document text
- http://vezubigaru.rf.gd/65198739838.pdfIn PDF document text
- https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_df517619aa834742bdb88cf68e3fe0ed.pdf?index=trueIn PDF document text
- http://jamositewizet.epizy.com/jung_red_book_images.pdfIn PDF document text
- https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_0027224d1c184bbc8bc96f7a24a91233.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC06	5448 bytes
SHA-256: `527563968be421be7f85f452e28a8b778b86b90dda2946821b84ecd4811bd900`
`font_01_sfnt_off0000fe97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE97	11460 bytes
SHA-256: `aff5ee06e0d59150c95b13b360447f2d205dd080e5b9b316e3e92bd0489fdfa3`
`font_02_sfnt_off00012598.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12598	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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