PDF malware analysis — malicious · f4a8d2b3c9bc5d78

MALICIOUS

PDF

233.5 KB Created: 2021-03-22 00:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: f2bec3b7aa5320d06933466cfb3796b8 SHA-1: 5a7f98ef64b13798d788739f425c5e2ffadca493 SHA-256: f4a8d2b3c9bc5d782244cde58080c2a8b8368c42cca16204ded5e1c5ac89754c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9793

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://kuzutuzo.ru/strik?utm_term=colegio+oficial+de+enfermeria+de+valladolid+empleo PDF link annotation
- http://herss.space/pebixikipomiropozobafuu4mky.pdfIn PDF document text
- http://gepexoliv.medianewsonline.com/mobonuxonowinudif.pdfIn PDF document text
- http://wivaserana.mywebcommunity.org/22559461919.pdfIn PDF document text
- https://cdn.sqhk.co/gabogivoxavi/3YhgjjH/rujikabagoxipoj.pdfIn PDF document text
- https://cdn.sqhk.co/tabuguran/eYhhVij/25989818946.pdfIn PDF document text
- http://ig-socialmedia.xyz/83294600892rf8ya.pdfIn PDF document text
- https://cdn.sqhk.co/zogobadakedu/donrjfp/everybody_s_outdoor_survival_guide.pdfIn PDF document text
- http://xunarepozufuz.mygamesonline.org/furinno_abbott_corner_computer_desk_with_bookshelf.pdfIn PDF document text
- http://ultra0.space/hanuman_katha_mp3_free_downloadco2jg.pdfIn PDF document text
- http://weraka.online/gobirefelobopapagibopdqtuw.pdfIn PDF document text
- https://cdn.sqhk.co/pozedezupase/Iic3Hgj/alarm_clock_download_music.pdfIn PDF document text
- http://cafe-cok.ru/84822563682x7jdy.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://849bdae7-2456-4570-9e2a-fc769e7e49ad.filesusr.com/ugd/2074c9_2cc5aff938ba48b58a14ff37f7870d0b.pdf?index=trueIn PDF document text
- http://kepojuwewi.rf.gd/membrane_structure_fluid_mosaic_model_worksheet.pdfIn PDF document text
- https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_09b5eaa159e440329dbf8ca63b352610.pdf?index=trueIn PDF document text
- https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_c44d681f44034d69bad8693a221041d5.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/63c59fac-7fcf-484d-8bc9-e925ed0edbb5/what_to_do_when_element_tv_wont_turn_on.pdfIn PDF document text
- https://4eb3a9b5-ca6a-4b2a-896e-878abc754f3b.filesusr.com/ugd/f1ab86_ed5d87ba1e4141348de0f1c44e89b948.pdf?index=trueIn PDF document text
- http://pulitisagot.atwebpages.com/93273331027.pdfIn PDF document text
- http://xepuzakudera.atwebpages.com/arranging_numbers_from_least_to_greatest.pdfIn PDF document text
- http://texotozaxaw.rf.gd/71005706236.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e17c3496-e4bb-4cac-8ddc-bc5b1d11dc9e/44930921227.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5ee76bb9-e19a-485a-a456-d5291b310e65/samsung_50_inch_curved_tv_price_in_india.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92a9f1ca-1e85-41ef-86bd-29f661488257/rakor.pdfIn PDF document text
- http://tabewozuzigenog.epizy.com/mathematical_statistics_with_resampling_and_r.pdfIn PDF document text
- https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_013cf04a0c2d4851919a2861edb500d5.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00033620.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33620	1944 bytes
SHA-256: `c052f2a682a1af7f75a3d87f716bc9678989379ec17fcb9a57f21fc5c3a4f630`
`font_01_sfnt_off00033f56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33F56	5260 bytes
SHA-256: `3646ec1a074e17c2624ad44dbb3e2dbb64179fdbac8c384f650abe4c09c730bb`
`font_02_sfnt_off00035134.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35134	15304 bytes
SHA-256: `753334d99ef73e150e7e68335979a5a65641a5b0c1229d1eb201459ad65452b7`
`font_03_sfnt_off0003814f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3814F	16060 bytes
SHA-256: `d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7`

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