PDF malware analysis — malicious · 5eb66d499f934688

MALICIOUS

PDF

67.6 KB Created: 2021-03-05 18:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 11fb3b7f17dba7e2830d8255449972ba SHA-1: 3ec90d609c3bd3eab02caa2011f7093fc2aa7f42 SHA-256: 5eb66d499f9346887454623981a3948e633a486b4b8c451094242b9de1b7287b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to PDF files hosted on CDNs, suggesting a link farm or redirection scheme. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports malicious intent. The embedded URLs likely serve as lures to phishing or malware distribution sites.

Machine Learning

Nyx PDF Classifier malicious score 0.8462

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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://dugedepap.ru/aws?utm_term=how+to+use+roku+remote+app+on+iphone
- https://cdn.sqhk.co/bomemenun/SUige8w/xuzexerorodelumuzujoz.pdf
- https://cdn.sqhk.co/moxibusas/Udge2IM/photo_studio_close_to_me.pdf
- https://cdn.sqhk.co/nadizolobe/6jchaDu/city_car_driving_2020_challenger.pdf
- https://cdn.sqhk.co/fisejadiruw/00ijihg/zolasavawiligus.pdf
- https://cdn.sqhk.co/nepopagugela/jjjjihE/entrepreneur_magazine_subscription_uk.pdf
- https://cdn.sqhk.co/piwizogir/khcggig/37169069025.pdf
- https://cdn.sqhk.co/mivesumor/Objf8fs/green_bubble_meme.pdf
- https://cdn.sqhk.co/lobinazema/djdN3dz/1_clue_words_and_syllables_level_10.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_74ae0b4338f64e649a11fdf7a9659abf.pdf?index=true
- https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_99e0245c0aba46b8b564b0c01d0dab58.pdf?index=true
- https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_d6dcb04f3d244e23ab343b1de836c6f4.pdf?index=true
- https://1482387f-61d8-47e1-b538-9b7f1e8b89fb.filesusr.com/ugd/538d67_7e8664194471458ea607ddbbc8b47a0b.pdf?index=true
- https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_948b82b897fb45dbaef74237199fbc4a.pdf?index=true
- https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_9989250bb60f47e592caf415ae068819.pdf?index=true
- https://uploads.strikinglycdn.com/files/a8083b17-fd73-4e60-887e-c9b7c9769204/where_is_the_defrost_timer_located_on_fridge.pdf
- https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_55e4cb59900e48689e993cd599318029.pdf?index=true
- https://6cabd977-7569-47b8-b834-fc65c40fd214.filesusr.com/ugd/84a5c6_db1eecb9aa1c48e8afc1f4d812c68f1f.pdf?index=true
- https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_15c1103666f3426c9e1a06cac6ba9ff3.pdf?index=true
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f8db.bin` `b0c85aa0ee7763493a458dd138ffadb9c28048cbbc6df93a1e69fd78cdb3eb20`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8DB	5144 bytes

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