Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eaae5bb9371880d…

MALICIOUS

PDF

68.0 KB Created: 2021-06-04 13:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d865e07f7d1549804a2ca62ff138dbd SHA-1: c82eae3c8d7d486dcfc61dd291dd2808824b46fb SHA-256: 7eaae5bb9371880d2e4eee335b2fdd94435ac1e133fc77d72e394f6302f07be4
184 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to malicious content or phishing pages. The presence of embedded URLs and the overall structure strongly suggest a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7642

Heuristics 5

  • 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
  • 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
  • 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://pixomot.ru/pbw?utm_term=girlfriend+bengali+movie+song+ringtone+download
    • https://tusutaxuwipafu.weebly.com/uploads/1/3/4/4/134403355/6902fd031.pdf
    • https://boxudeso.weebly.com/uploads/1/3/4/3/134320939/domemizeged_sixosurapemi_sapatowidobunet_ranikotupiwe.pdf
    • https://static.s123-cdn-static.com/uploads/4461485/normal_5ff2fee9ee35d.pdf
    • https://majijajivetik.weebly.com/uploads/1/3/4/2/134265766/7582221.pdf
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/mujoviworasik-wofadekunax.pdf
    • https://cdn-cms.f-static.net/uploads/4419637/normal_605eea2b81b51.pdf
    • https://dexanobibe.weebly.com/uploads/1/3/5/2/135299911/9a74f9d419.pdf
    • https://wiliwakura.weebly.com/uploads/1/3/4/5/134596421/lasusukawapot-junel.pdf
    • https://vavixama.weebly.com/uploads/1/3/4/4/134471840/6337661.pdf
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/b839562b7be7d8.pdf
    • https://kififapowugix.weebly.com/uploads/1/3/4/6/134685489/ede411.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pejokawigar.pbworks.com/f/96292276848.pdf
    • http://kufujibumufa.pbworks.com/w/file/fetch/144413937/how_to_write_a_30_day_notice_to_vacate_property.pdf
    • https://uploads.strikinglycdn.com/files/12c33d3e-8c10-4ae0-9ed9-2906566c0ae9/the_legend_of_zelda_the_minish_cap_romsmania.pdf
    • http://degagogo.pbworks.com/w/file/fetch/144587952/izimin_srlar_1-temel_karakalem_teknikleri.pdf
    • https://uploads.strikinglycdn.com/files/4e40abe5-a4b3-48ab-a520-ac7367991da0/how_to_be_a_secret_agent_in_south_africa.pdf
    • http://xuvabufoj.pbworks.com/w/file/fetch/144471963/apeman_h70_trail_camera_set_up.pdf
    • http://natizasex.pbworks.com/f/how_to_highlight_duplicates_in_google_sheets_easy_steps.pdf
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da2d.bin
ecd3c7cc77f25ae4e8faecdef6468ed63c91d5434addd7e94e6de765aebec9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 5336 bytes
font_01_sfnt_off0000ec45.bin
4e0d3d089a9f059cc167614444b938bf0b198a93d633c69f09fb6f0eb7003fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC45 4740 bytes

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