PDF malware analysis — malicious · aedc98c244b0a7aa

MALICIOUS

PDF

77.3 KB Created: 2021-03-24 13:31:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: f5196e549c0d100ccc5c72a374e5f13d SHA-1: d3097c13c8983c16bd4757163daeaf53de1cbbdc SHA-256: aedc98c244b0a7aab6f3be2844b68d6fdf2e06ebd0d55ec215f23ad6b55c612e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing and trojan threat. The heuristic 'SE_REMOTE_SUPPORT_LURE' suggests the document's content is designed to trick users into installing remote support tools, a common tactic for gaining unauthorized access. While no scripts were explicitly extracted, the presence of numerous external URIs and the nature of the lure point towards an attempt to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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://jacksth.ru/wix?keyword=tara+campbell+artosis PDF link annotation
- http://pusewuvi.medianewsonline.com/stock_market_live_news.pdfIn PDF document text
- http://jofifuneku.medianewsonline.com/xomukok.pdfIn PDF document text
- http://lumobumekola.getenjoyment.net/80834998194.pdfIn PDF document text
- http://volupixo.mygamesonline.org/bozafoxopoguleke.pdfIn PDF document text
- http://top-salez.site/bhagwa_rang_song_newlo05z.pdfIn PDF document text
- https://danexuxubusam.weebly.com/uploads/1/3/2/6/132695747/61805.pdfIn PDF document text
- http://table-wait.com/lixobowudaz2ciun.pdfIn PDF document text
- http://table-wait.com/how_to_clean_graco_pack_n_play_bassinetb0uu6.pdfIn PDF document text
- https://ranazujip.weebly.com/uploads/1/3/5/3/135398887/fapozuragije.pdfIn PDF document text
- http://neriwor.medianewsonline.com/39339844226.pdfIn PDF document text
- http://myfirstsite.xyz/bear_archery_cruzer_g2_ready_to_hunt_compound_bow_packageb3pma.pdfIn PDF document text
- http://idealica-ufficiale.site/box_plot_graph_in_wordlfznn.pdfIn PDF document text
- http://felagem.getenjoyment.net/adobe_photoshop_cs6_tutorial_in_tamil.pdfIn PDF document text
- http://ligumexijigab.getenjoyment.net/86822466496.pdfIn PDF document text
- http://fitatuvepejozo.sportsontheweb.net/mawotifag.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://bememikat.onlinewebshop.net/infinity_war_thanos_snaps_his_fingers_and_everyone_dies.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/10d1c248-8a45-4049-b4c2-b808948ed32f/information_technology_jobs_arlington_tx.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6fcc62f5-33de-47ed-b583-5a8012b8670b/30289829357.pdfIn PDF document text
- https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_41fbafad7c93407d8f54f956dc0d4f34.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0a7883d3-06ad-4a4d-88cb-589c0641e20a/duluganuzoxijorakuku.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2d78578-9a6a-4025-9c22-3f9279f33350/pumetujorasodamaw.pdfIn PDF document text
- https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_0a927f5d155348cda16710dd6ba36fd0.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f07a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF07A	5168 bytes
SHA-256: `75f36fbb5b20ce59ddd1842f540a8e338c63db8e478c59a1f9bcc4c430df66b9`
`font_01_sfnt_off000101ef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101EF	11208 bytes
SHA-256: `e9ff75336d984fd0293821d5c08fe31e725bd2d06635890215e6bd98432805a5`

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