PDF malware analysis — malicious · 0269ee0fc2421507

MALICIOUS

PDF

94.1 KB Created: 2021-03-23 07:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 23c4f84e38ca2b35a0fb503c4709bec3 SHA-1: 7882e6f67788fb4ac3b3cef01161d3165025d336 SHA-256: 0269ee0fc2421507a4deef8df33dc8af24a58f7e99e82262b5d3bb80bc47da30

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed to host multiple links on disposable domains, further supporting a malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or trojan delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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://mezovuduw.ru/award?keyword=long+term+effects+of+alcohol+on+the+body+pdf PDF link annotation
- http://virona.org/736316826012rtaj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370072/normal_602baa086ba04.pdfIn PDF document text
- http://davebamonuzove.medianewsonline.com/autosuggestion_positive.pdfIn PDF document text
- http://kuzexamipapoxip.medianewsonline.com/algebra_1_2_third_edition_answers.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4501028/normal_5ff1ba4daf4d1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484380/normal_5feb05d45e167.pdfIn PDF document text
- http://italywow.space/beauty_plus_latest_versionwihl2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452621/normal_5fe8f21e256ad.pdfIn PDF document text
- http://axecheat5.xyz/197895505818m9zm.pdfIn PDF document text
- http://wuzejava.22web.org/91813621374.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490250/normal_5ff32c7058e48.pdfIn PDF document text
- http://honey-love.ru/real_book_christmasznh9k.pdfIn PDF document text
- http://bomaduworofa.medianewsonline.com/quran_malayalam_translation_download.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://2225f16e-b6a0-48e2-a067-d7e802b71dd4.filesusr.com/ugd/a7ada4_42dc977dc51c4b2eb3c292f31b40da60.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pusolefosex/rosutef.pdfIn PDF document text
- https://s3.amazonaws.com/libusamagowuvo/is_there_a_reset_button_on_a_maytag_centennial_dryer.pdfIn PDF document text
- http://tekokixuvufepu.epizy.com/gexomenaxesa.pdfIn PDF document text
- https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_1358dd268e764e4180db4f30969aaf1b.pdf?index=trueIn PDF document text
- http://fiwimawa.rf.gd/98908287470.pdfIn PDF document text
- http://nomamazuzut.atwebpages.com/aptis_mock_exam.pdfIn PDF document text
- https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_0c7620d34e24460c98582b351834e9ca.pdf?index=trueIn PDF document text
- https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_aa0de9e7e6a149f69613e22e862a474f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zobuwubedak/68514801685.pdfIn PDF document text
- https://s3.amazonaws.com/loxopudizus/saxugobukulosefikexozurer.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_off000124ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124EC	5492 bytes
SHA-256: `4b787b46b525fe19608438d70291cf2639b8bfb71311d02dcf46ed4984da667c`
`font_01_sfnt_off00013770.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13770	10724 bytes
SHA-256: `933193c23826cb75299e20db85e5a1da377cd867632d96df0a84fde6d9f70e7e`
`font_02_sfnt_off00015c30.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15C30	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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