PDF malware analysis — malicious · b7eed76f07a7b692

MALICIOUS

PDF

77.2 KB Created: 2021-04-04 19:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 2f692dcd2ac73dccb643088bc44b45de SHA-1: 412d05841f964dfe5d50f0744e8df802ba8a715a SHA-256: b7eed76f07a7b692c9a7d6443156d5c5a0ccddabf431cd6efdf112b07563d2ee

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and a phishing attempt. It contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting an attempt to redirect users to malicious content. The document's structure and embedded links indicate it is designed to trick users into visiting potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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://pelibifir.ru/aws?utm_term=how+to+check+motherboard+number PDF link annotation
- http://ttop-shop.com/wurupesazubryqhp.pdfIn PDF document text
- http://marketitaly.info/kkl_saylar_elenikc2cyd.pdfIn PDF document text
- http://gopudumimipabol.mypressonline.com/html_to_c_with_css.pdfIn PDF document text
- http://cherrypimp.online/20870749692y74t9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421477/normal_5ff0ca753ac64.pdfIn PDF document text
- http://shlifovka-pol.website/wubonewixht8bv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489409/normal_6051cabe58c11.pdfIn PDF document text
- http://4gusevshop.space/wisemomafibubanukorifutezhhe.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380699/normal_5fc994075c73b.pdfIn PDF document text
- http://fupemagis.mywebcommunity.org/sefosoruzokomewit.pdfIn PDF document text
- http://genusadnlo.space/36584786744rre6a.pdfIn PDF document text
- http://fulokixowo.scienceontheweb.net/etymology_dictionary_free_download.pdfIn PDF document text
- http://uscreditmonitoring.info/13_original_colonies_map_worksheetc920q.pdfIn PDF document text
- http://lomigakorak.getenjoyment.net/6092964947.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456114/normal_60621db97cb95.pdfIn PDF document text
- http://bioforcecolumbia.site/garlic_planting_and_harvesting_timehan7e.pdfIn PDF document text
- http://wixosefimaba.scienceontheweb.net/mass_effect_andromeda_strategy_guide_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://uploads.strikinglycdn.com/files/a0138147-48c2-4061-861f-096a659c4d0e/jonomelimoraxegodetuwidu.pdfIn PDF document text
- http://kutoxinupuroxo.onlinewebshop.net/niparox.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e08f7ba6-a16c-41ac-9f00-52a3d82d3513/44743863402.pdfIn PDF document text
- http://gudugapapilile.atwebpages.com/zigeno.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eae62df7-b096-45a8-923e-508b64f81918/where_is_riding_trainer_in_stormwind.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9544db5a-7500-459d-a182-49e88b523bc8/xakado.pdfIn PDF document text
- http://mivurukelino.onlinewebshop.net/81266139610.pdfIn PDF document text
- http://zesugipove.onlinewebshop.net/arc_mate_120ic.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_off0000e36c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE36C	5060 bytes
SHA-256: `7c5961ae2ee9de220c2c6e7ea7cf4ffbfeffe70d28c02547f60c59cd24e0014b`
`font_01_sfnt_off0000f477.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF477	10708 bytes
SHA-256: `7f1087369e99832737d185044a949474a137dc895ac33052f4f39841449a24eb`
`font_02_sfnt_off0001191a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1191A	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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