PDF malware analysis — malicious · 0d9724996627bcb0

MALICIOUS

PDF

79.6 KB Created: 2021-03-21 00:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 308bf90b2f3370dcd9d04468d1fea893 SHA-1: 6d6803877089ba31663be14a89660ac193a6c064 SHA-256: 0d9724996627bcb0468bc2c7c7d28848859f9d54bbd50586575167b6deb72233

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, and one specific URL is associated with a link farm designed for SEO manipulation. The document body, though heavily obfuscated, suggests a lure related to popular media to entice users to click on these links, which likely serve as phishing pages or downloaders for further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://vilenefex.ru/strik?utm_term=harry+potter+and+half+blood+prince+game PDF link annotation
- http://wozovumorawoka.sportsontheweb.net/5312520786.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496582/normal_6000f598dbe96.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501486/normal_60221407ca247.pdfIn PDF document text
- http://puliliraforuwu.22web.org/olevia_tv_blue_screen_no_signal.pdfIn PDF document text
- http://rifeter.22web.org/40120809804.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4418788/normal_5ffba2f41cd9c.pdfIn PDF document text
- https://cdn.sqhk.co/rufopunuk/eoNhePb/48152108069.pdfIn PDF document text
- http://dabukim.mygamesonline.org/nesuwi.pdfIn PDF document text
- http://fewudutizoxom.medianewsonline.com/39963918910.pdfIn PDF document text
- http://nuvagefo.medianewsonline.com/wojezanupufamibudefirome.pdfIn PDF document text
- https://cdn.sqhk.co/vivejegefonu/g9ieRbx/kozadevugu.pdfIn PDF document text
- https://cdn.sqhk.co/jabisopomuxo/bNgiKhd/vikings_warship_chair.pdfIn PDF document text
- http://nuvuxek.iblogger.org/23849684580.pdfIn PDF document text
- https://cdn.sqhk.co/noneniwetav/d1vWhcs/adamantine_ff8_remaster.pdfIn PDF document text
- https://cdn.sqhk.co/zoribakim/0wmliaJ/bruxelles_formation_bf_industrie_anderlecht.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://zunaxixe.rf.gd/86051509682.pdfIn PDF document text
- http://dusetelonuzaj.epizy.com/sikifetusadenikowevumibo.pdfIn PDF document text
- http://lemunewelow.epizy.com/89556078530.pdfIn PDF document text
- https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_4b39b71f126e49878f0c08e4e92bd84c.pdf?index=trueIn PDF document text
- http://tupusivamiguta.rf.gd/segitoripurebolenixivij.pdfIn PDF document text
- http://pirajog.epizy.com/34638064661.pdfIn PDF document text
- http://wepelefil.rf.gd/jiwazujok.pdfIn PDF document text
- http://ladorum.epizy.com/90486070732.pdfIn PDF document text
- https://1747caf2-50c5-4ace-8f30-8d3f4e2f7d49.filesusr.com/ugd/017962_2053eb4cefd347b8b326c4e980b5f2ad.pdf?index=trueIn PDF document text
- https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_88a378e7962241599de20b5b59535db4.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_off0000e928.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE928	5384 bytes
SHA-256: `be64b56dc118df4acb46760155773566c6f3b863b1ddef544190e3145cca9f65`
`font_01_sfnt_off0000fb46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB46	11004 bytes
SHA-256: `f790448c57546ef264c33bcc3b1470e8d9174f155cdc57d45938743d3dc98662`
`font_02_sfnt_off000120c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120C4	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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