PDF malware analysis — malicious · aa9fe2def89ddddb

MALICIOUS

PDF

335.7 KB Created: 2021-05-12 03:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 963fec8509eef9f8d714193d782b0db3 SHA-1: 7a00e4c6a818346c9b1fd2c54e630a082bb0379c SHA-256: aa9fe2def89ddddb06d7c841b348899b37eedb34bc06ab14e9d3207674d6fee1

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a high-severity 'PDF_SEO_UTM_REDIRECTOR_LINK' and a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL, https://jottigo.ru/strik?utm_term=quick+and+easy+veg+indian+breakfast+recipes, is likely part of a phishing or malware distribution scheme. The ML classifier also assigned a high probability of maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9413

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
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://jottigo.ru/strik?utm_term=quick+and+easy+veg+indian+breakfast+recipes PDF link annotation
- https://cdn-cms.f-static.net/uploads/4475999/normal_606282bb5e1fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379032/normal_606916371629c.pdfIn PDF document text
- http://pogakegi.22web.org/city_green_book.pdfIn PDF document text
- http://rafupufubed.mypressonline.com/bodomigomodopofaxoxelu.pdfIn PDF document text
- http://didazema.mypressonline.com/boogie_woogie_bugle_boy_ssa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475859/normal_6052324d26c4a.pdfIn PDF document text
- http://nageramuvepom.mywebcommunity.org/apache_spark_cheat_sheet.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499673/normal_602d0d78e6405.pdfIn PDF document text
- https://cdn.sqhk.co/lagitesavap/GoheBgi/89085450904.pdfIn PDF document text
- https://cdn.sqhk.co/lovolipeg/jjjahcl/76660148653.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488322/normal_60143c6f7cf2e.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://kexasejuwodeji.epizy.com/xadogezafidave.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9915850-480c-4886-9c27-322f5ee11a5f/sedanik.pdfIn PDF document text
- http://fokibuzevurir.rf.gd/81645050240.pdfIn PDF document text
- http://xejimeve.rf.gd/viktor_frankl_biografia_resumen.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8d86ffae-4d22-4bf2-bacc-0ea685626ac1/wapotobedolo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f936985-5379-49a8-ac70-bb317b4291e9/lederasugalipaw.pdfIn PDF document text
- http://welusit.epizy.com/sensifast_cdna_synthesis_kit.pdfIn PDF document text
- http://xakilapug.epizy.com/computer_hardware_servicing_grade_10_curriculum_guide.pdfIn PDF document text
- http://jufawananifufa.rf.gd/lic_proposal_form_for_jeevan_shanti.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bef07238-c539-4657-8ad8-ba33f177ab25/xusenenebebusijud.pdfIn PDF document text
- http://nesoruzesin.epizy.com/57672938727.pdfIn PDF document text
- http://wovibojo.onlinewebshop.net/geruk.pdfIn PDF document text
- http://jemileti.atwebpages.com/32537146234.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_off0004e4ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E4BA	5492 bytes
SHA-256: `630b1aedd7a698ba1757e196fd25a03b0acdab2a4a1a15de80062bd132b51159`
`font_01_sfnt_off0004f77d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F77D	12448 bytes
SHA-256: `bd6dddc97bf2e1d8d1a0a5c543f616019b5b5553cb68e0ed9775e06eadd768a8`
`font_02_sfnt_off000520f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x520F4	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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