PDF malware analysis — malicious · b45f23dd8e6dd510

MALICIOUS

PDF

77.9 KB Created: 2021-02-21 03:03:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 41037db8bfdf5136a2632ad4bf6157cf SHA-1: bad7d899f26f2d45181c35ba1a1b76450f211380 SHA-256: b45f23dd8e6dd510ddfe838bba4e4aa6feb54f0438903dd1cea2d5a1a37376b9

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic to redirect users to malicious content. The document body, though heavily obfuscated, contains a search query related to 'how to turn on bluetooth on nordictrack', likely a lure to attract unsuspecting users.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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.
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://seumenha.ru/strik?utm_term=how+to+turn+on+bluetooth+on+nordictrack PDF link annotation
- http://copyrightram.net/pomigojozefateboxokomukueon.pdfIn PDF document text
- https://vufumepuzatine.weebly.com/uploads/1/3/5/3/135335191/67411bf2b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467979/normal_600b5af102a5d.pdfIn PDF document text
- http://redtea.space/60630202695a44j7.pdfIn PDF document text
- https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/mivajenurosi_zokinipebe_tatofeguwedawaf.pdfIn PDF document text
- https://semukozev.weebly.com/uploads/1/3/4/4/134493414/b775d4e47b3.pdfIn PDF document text
- https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/4371585.pdfIn PDF document text
- http://lnstagramverifiedsbadgeforms.com/dapawuve1skp.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4472221/normal_6007b415a04fb.pdfIn PDF document text
- http://yourdesk.website/wizagizusixibol8bbp3.pdfIn PDF document text
- http://legendarycraft.ru/japuguwutd5syo.pdfIn PDF document text
- https://supadebev.weebly.com/uploads/1/3/2/7/132712355/4072063.pdfIn PDF document text
- http://zavarivaemvmeste.ru/220125302879dn0a.pdfIn PDF document text
- https://wimofitadaxota.weebly.com/uploads/1/3/4/3/134362004/gabimitetijuvijutato.pdfIn PDF document text
- http://trackengine.host/81426161028ax5qt.pdfIn PDF document text
- http://gelchlen.fun/53515293868danlv.pdfIn PDF document text
- https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/b96ce.pdfIn PDF document text
- https://sozagigojo.weebly.com/uploads/1/3/1/4/131454883/2891615.pdfIn PDF document text
- http://itchia.space/256426098077wjys.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://s3.amazonaws.com/kavugusepe/sukapu.pdfIn PDF document text
- https://s3.amazonaws.com/legapatatezisa/chsl_2018_tier_1_answer_key.pdfIn PDF document text
- https://s3.amazonaws.com/tometubufimopim/weather_report_of_dhenkanal_odisha.pdfIn PDF document text
- https://s3.amazonaws.com/xidazeze/muvidezuxikewakuw.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_off0000e3bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3BB	4988 bytes
SHA-256: `ff66648a5341d5f941a990e9e8e02e633f00b921fc2dfcddbb903d4c3bd8dc00`
`font_01_sfnt_off0000f4ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4AD	10932 bytes
SHA-256: `f55a739ba2fb4d3b457c44e4e4b2fd0bedb3c690809cedfba51cd2560844a7b0`
`font_02_sfnt_off00011a37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A37	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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