PDF malware analysis — malicious · b4bc34adba6ca069

MALICIOUS

PDF

115.8 KB Created: 2021-02-04 13:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 90a6577ad8b23a7d14c7766e41b7f18a SHA-1: fe1da12ec7c212dd0b6d2fc4ef8fee24bc7831bb SHA-256: b4bc34adba6ca069b9b6977513efdcd1abbfa17978e0d68b817381a9ae5afa53

226 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document likely instructs the user to install or connect to a remote support tool, a common tactic for social engineering. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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=electronegativity+orbital+diagram PDF link annotation
- https://kololeranazi.weebly.com/uploads/1/3/4/5/134583506/tebawuvasirekes.pdfIn PDF document text
- https://telarosiz.weebly.com/uploads/1/3/5/3/135318094/tikufe-telixokumapi-meziwi.pdfIn PDF document text
- https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/4b67f866c1b1ed.pdfIn PDF document text
- https://petekebinipaz.weebly.com/uploads/1/3/5/3/135395272/6207967.pdfIn PDF document text
- https://gunagejosiva.weebly.com/uploads/1/3/0/7/130738835/49b2cea0d681.pdfIn PDF document text
- https://cdn.sqhk.co/vadetegubufo/uQhjNhg/free_sms_para_cuba.pdfIn PDF document text
- https://cdn.sqhk.co/tofatuxurejo/nthfihC/ben_10_alien_fight_tamil_episodes_download.pdfIn PDF document text
- https://cdn.sqhk.co/lipidupi/94oVgi9/xijakobidakifufesujimax.pdfIn PDF document text
- https://cdn.sqhk.co/medujebukoma/cgeheif/world_market_coupon_code_august_2020.pdfIn PDF document text
- https://cdn.sqhk.co/jomawutid/aifVYx9/field_navigator_review.pdfIn PDF document text
- https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/3157198.pdfIn PDF document text
- https://cdn.sqhk.co/feripamapuv/c0ggdgj/ping_pong_table_game_online.pdfIn PDF document text
- https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/pegigasosux.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
- http://letituxis.epizy.com/teamviewer_12_cnet.pdfIn PDF document text
- http://robinovedibepo.epizy.com/12457390818.pdfIn PDF document text
- https://s3.amazonaws.com/wewuxuviwar/camping_ca_savio_cavallino_treporti_italie.pdfIn PDF document text
- http://kopivenegi.epizy.com/synonyms_of_improve_performance.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00016fea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16FEA	5128 bytes
SHA-256: `1b881d76a5105a90099c2d9ef832bcf03b9be8213b0cc7ed744cb6a9f2ce1eb8`
`font_01_sfnt_off00018146.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18146	15824 bytes
SHA-256: `26801fcdeebf95392fa6108e97c18b0fd300e4a3b4faef74863abd17e4192b91`
`font_02_sfnt_off0001b388.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B388	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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