PDF malware analysis — malicious · 895680279617b314

MALICIOUS

PDF

89.4 KB Created: 2021-03-13 16:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: 63f84da6b5c968a2e846e61f84d7c92e SHA-1: dbc3a12ac2c9fddab2a960070385ac20d93b5048 SHA-256: 895680279617b31472179cd63a95301d011d3470fdd54431cf7dc015b06515df

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous external URIs, with a primary focus on directing users to `https://vilenefex.ru/award?keyword=axiology+meaning+pdf`. This suggests the document is designed to act as a lure, potentially for phishing or malware distribution, by disguising malicious links within seemingly innocuous content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or content-luring attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://vilenefex.ru/award?keyword=axiology+meaning+pdf PDF link annotation
- https://taralibupub.weebly.com/uploads/1/3/4/3/134372711/5440152.pdfIn PDF document text
- http://nusowutevu.getenjoyment.net/essentials_of_business_law_10th_edition_answer_key.pdfIn PDF document text
- https://cdn.sqhk.co/vedasukuki/jaTcii6/large_number_cordless_phone_for_seniors.pdfIn PDF document text
- https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/tovuz-jemurosuzukuje.pdfIn PDF document text
- https://cdn.sqhk.co/vekunego/gjg0gda/aamc_mcat_2021.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378379/normal_5fd3ccacde2ef.pdfIn PDF document text
- https://zulujiporanaru.weebly.com/uploads/1/3/4/5/134590758/xadusi.pdfIn PDF document text
- https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/c2f8c306.pdfIn PDF document text
- http://nutosuvitiraj.scienceontheweb.net/zekifisolexomezutanevef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476569/normal_6037d2bd39e3d.pdfIn PDF document text
- http://zitugaxusi.mygamesonline.org/12008947244.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465556/normal_603835350d149.pdfIn PDF document text
- https://cdn.sqhk.co/gubujurit/fhc6hjt/excel_arrondir_le_rsultat_d_une_formule.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://uploads.strikinglycdn.com/files/1115a20b-21df-46dd-aa06-24f0c119447d/what_is_a_synonym_for_clear-headed.pdfIn PDF document text
- https://s3.amazonaws.com/mogedozara/scert_full_form_in_tamil.pdfIn PDF document text
- https://s3.amazonaws.com/tomamujuf/lumadefetisoboxewusaja.pdfIn PDF document text
- http://moxadokikubod.onlinewebshop.net/penulu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/375d4bc6-7d4a-4efc-a44d-e6368dfd13fc/sidep.pdfIn PDF document text
- https://s3.amazonaws.com/ponivotigegepub/2010_camaro_ss_zl1_for_sale.pdfIn PDF document text
- https://s3.amazonaws.com/xojafemori/dazuv.pdfIn PDF document text
- http://zowofiz.myartsonline.com/niteti.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6ea367c2-533b-4641-aed3-ff668b271ab2/brother_hl-2040_driver_windows_10_64_bit_indir.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_off00011001.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11001	4956 bytes
SHA-256: `86b09f24452adb08081bc2ecd4c1ee0364ae2415b1f57b643cbd5c683d7470c9`
`font_01_sfnt_off000120c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120C8	12552 bytes
SHA-256: `80fe607ecb1d3919fac6cb559babba27eb55f44da1cb1787d8740575c9c34ee9`
`font_02_sfnt_off00014984.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14984	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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