PDF malware analysis — malicious · 9dce557f64f5812a

MALICIOUS

PDF

72.1 KB Created: 2021-06-01 19:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7f21722aba9e2c75bd9959eed06b658c SHA-1: 64c5c11fbdf17ae40b4a4f381b18dc0b024de4a0 SHA-256: 9dce557f64f5812a25a0d08c2860aeecebcb663867b3a3463f3746bb75103a41

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of the primary URLs points to a domain associated with phishing and SEO manipulation. While no scripts were extracted, the structure and heuristics suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9358

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://krisoc.ru/pbw?utm_term=vernier+caliper+questions+and+answers+pdf
- https://cdn-cms.f-static.net/uploads/4406168/normal_5fd86ba10f8ea.pdf
- https://soputepitup.weebly.com/uploads/1/3/5/9/135973261/347456.pdf
- https://dogixosewe.weebly.com/uploads/1/3/4/6/134633635/mezamafup-xumiputu-vagosabud-lidaz.pdf
- https://cdn-cms.f-static.net/uploads/4445555/normal_603efee5b7c62.pdf
- https://cdn-cms.f-static.net/uploads/4380405/normal_603e2fe31eadc.pdf
- https://gumulopeviw.weebly.com/uploads/1/3/5/3/135348062/zepotute.pdf
- https://cdn-cms.f-static.net/uploads/4462093/normal_605f7f551c414.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://muxopal.pbworks.com/w/file/fetch/144444615/javascript_ecmascript_2020_download.pdf
- https://uploads.strikinglycdn.com/files/c7ef34aa-0801-4c2d-9fb6-0331ae836325/who_died_in_hunger_games_mockingjay_part_2.pdf
- https://uploads.strikinglycdn.com/files/8e99b0f0-fec2-4abd-aaa0-d36ca8205986/best_seller_books_2020_thriller.pdf
- https://uploads.strikinglycdn.com/files/a265156c-1dee-4627-8ef6-87c00fb79f83/what_do_the_bible_say_about_drinking_beer.pdf
- https://uploads.strikinglycdn.com/files/570aaa19-25cd-433c-b950-f3ad8c0eb99b/bolt_size_for_vizio_tv_stand.pdf
- https://uploads.strikinglycdn.com/files/82e3ceb2-429e-4d11-86ec-17936f100871/how_to_start_a_magic_chef_gas_oven.pdf
- https://uploads.strikinglycdn.com/files/5c631aee-8f66-450e-9d15-3ffbdf38d9ef/fizepimusuwukifoji.pdf
- http://xojifot.pbworks.com/f/55815384728.pdf
- https://uploads.strikinglycdn.com/files/d376a930-bcc1-4f6a-8cd9-575e6336a8f3/how_to_use_heavenly_chips_in_cookie_clicker.pdf
- http://zigunef.pbworks.com/f/dell_venue_11_pro_5130_specs.pdf
- https://uploads.strikinglycdn.com/files/e3301595-5a19-484d-bef6-305768582d07/muxiravezajugamaw.pdf
- https://uploads.strikinglycdn.com/files/7f9d5da1-4cea-428e-84a5-62459b7f4871/heroes_3_hd_maps_download.pdf
- https://uploads.strikinglycdn.com/files/4804194d-ca4c-451e-a982-f77fa8f67f02/assistir_os_trapalhes_no_auto_da_compadecida.pdf
- https://uploads.strikinglycdn.com/files/5c59dc2d-735b-4ad7-a1f1-a942e7060dbe/nawad.pdf
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d8ac.bin` `088c9ab75211e3c8de4359cc14d2ec5bf202ade78bb570abf029e916e0b7f1bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8AC	5332 bytes
`font_01_sfnt_off0000eaf3.bin` `aaa349fd903eb08deee572b6741a76742311e1b59abf72991f0820e880a080b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAF3	10412 bytes
`font_02_sfnt_off00010eb0.bin` `a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EB0	16204 bytes

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