Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b79476d67db9aa3…

MALICIOUS

PDF

78.5 KB Created: 2021-03-23 03:28:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da291b5a97a264cd7b3b5fa3998703e3 SHA-1: e26ae879fcdb04d90ed2233433d4cf8ec91871e1 SHA-256: 2b79476d67db9aa3944b88c7ddaa0c60e256b67b058cc905d0cf60cfc4f010dc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics and an ML classifier. It contains numerous external URLs, with one prominent URL leading to a link farm designed to redirect users. The document body, though heavily obfuscated, appears to contain metadata related to a specific hardware component, likely a lure to attract users searching for that item. The presence of external URIs and the link farm structure suggest an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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
  • 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://seumenha.ru/strik?utm_term=panasonic+cf-53+hard+drive+caddy
    • http://jumbochecker.com/rowezinuxuxerodapameettvu.pdf
    • http://myfirstsite.xyz/93958231142mnzly.pdf
    • http://wisatemubudu.medianewsonline.com/titabifanamanuwa.pdf
    • http://menformula.xyz/what_is_the_best_windows_operating_system_for_gamingltfk0.pdf
    • http://pezejij.mygamesonline.org/76377679358.pdf
    • http://blog-millionaire.buzz/streets_of_rage_4_ps4_cheat_codespw4rn.pdf
    • http://migriruy.ru/nopejag2oiv1.pdf
    • http://udilische.club/sanofixovotivofufotowil5i70u.pdf
    • http://jushq.pro/14837871715ov24t.pdf
    • http://begdas.fun/the_little_prince_summary_chapter_1-483ac2.pdf
    • http://itwomen.space/ejercicios_de_notacion_cientifica_para_secundaria73l68.pdf
    • https://cdn.sqhk.co/mogowepuw/VghhjLJ/free_diamonds_and_elite_pass_app_mod_apk.pdf
    • http://bewewafip.scienceontheweb.net/ctet_prt_syllabus_2020.pdf
    • http://idslim-italia.site/zubutekizemikomikbug5.pdf
    • http://meetporte.xyz/folusabiwupasatohvh.pdf
    • http://leftoutclub.com/remilofe04o4j.pdf
    • http://winoorama.website/78943016610d20x9.pdf
    • https://cdn.sqhk.co/fuvebopeweb/eGV5zhD/75739509118.pdf
    • https://cdn.sqhk.co/wisewuguv/hjifggI/toddler_friendly_swimming_pool_near_me.pdf
    • https://cdn.sqhk.co/bezupidokaz/gchd9jf/basketball_arcade_machine_australia.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b7cbdf42-e4e1-4677-bb96-c4aa436af7f2/ravutabunitibijunelisuji.pdf
    • https://uploads.strikinglycdn.com/files/06411e45-d271-4603-920d-34b872416df0/61315714657.pdf
    • http://nejimafalun.onlinewebshop.net/does_hbr_exhibit_hydrogen_bonding.pdf
    • https://uploads.strikinglycdn.com/files/e385fd45-efa5-4fb9-9cc8-ead7537f2abd/xasakegovobebojefod.pdf
    • https://uploads.strikinglycdn.com/files/4c2ae545-8832-41d0-ba17-91096b08c092/1232012473.pdf
    • http://xiwozoget.atwebpages.com/22908670385.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc9d.bin
4c688c0676da4c9c3f1d636d29496b85ed1f90b4285ee9b780884cc7de0e34ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 2960 bytes
font_01_sfnt_off0000e70d.bin
9eb86fed8428a974f15ffc80f22e03a202af7f08d3e2a81ce8c908b7b3cd9b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE70D 5268 bytes
font_02_sfnt_off0000f8f1.bin
e5e7de5820f36ffabb15acda0d10844aab5b37572418ebae2748da11633b9cbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F1 10568 bytes
font_03_sfnt_off00011d27.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D27 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.