Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da91e9d3776e98c…

MALICIOUS

PDF

76.1 KB Created: 2021-03-24 05:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a87fc71eae1bd64868741252d0b623d0 SHA-1: d976f8d8aa469c5500dc8560bb9af35a1193ddb8 SHA-256: 6da91e9d3776e98cf112320b0415a357eb7cd6987596239db3a3c9195068fa87
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which are generated for SEO purposes, suggesting a link farm or phishing operation. One of the primary external links points to a URL that appears to be related to movie streaming, potentially a lure for users seeking pirated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://maypoin.ru/wix?keyword=pain+and+gain+watch+online+free+with+subtitles
    • https://cdn.sqhk.co/pufowuvikij/hdslhai/67962888131.pdf
    • https://cdn.sqhk.co/guvevifowo/udifiga/kung_fury_2015_trailer.pdf
    • https://cdn.sqhk.co/junizafuzep/R4RD42b/ice_cream_recipe_cuisinart_chocolate.pdf
    • https://cdn.sqhk.co/niporatibu/ctjdieY/stick_hero_fighter_supreme_mod_apk_unlimited_money.pdf
    • https://cdn.sqhk.co/dafagupovo/dXheoIh/bangladesh_population_census_2011_report.pdf
    • https://cdn.sqhk.co/tibakekavero/iDcCjgd/sure_bet_247_login.pdf
    • https://cdn.sqhk.co/veladaxuzeba/ghuzbli/pcg_capital_funding_group_llc.pdf
    • https://cdn.sqhk.co/wanowofimaz/jhcgbgh/54136615302.pdf
    • https://cdn.sqhk.co/minamojazi/LifvXYK/wigupuzedosuvaganar.pdf
    • https://cdn.sqhk.co/kojagopomon/glN8hjc/iphone_camera_app_for_android.pdf
    • https://cdn.sqhk.co/xurazegoba/UyRJIao/gunship_battle_helicopter_3d_hack_version_game_download.pdf
    • https://cdn.sqhk.co/bokirebi/kghBAFd/let_s_create_pottery_lite_best_selling_pot.pdf
    • https://cdn.sqhk.co/rabataxuvax/hghajan/free_online_general_knowledge_quizzes_for_fun.pdf
    • https://cdn.sqhk.co/fowurona/q9jchbe/57755828016.pdf
    • https://cdn.sqhk.co/vafegijateno/hCjhvhb/buffer_meaning_in_malayalam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/simujix/bumble_dating_app_android.pdf
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_28ab6de0c25f42a2a49b6c9319c40e39.pdf?index=true
    • https://s3.amazonaws.com/legipalofi/vapuxinunuleril.pdf
    • https://7980b0ff-2efe-48f4-a442-6c87bca80713.filesusr.com/ugd/9bd8c3_d30b41b6c4c64f36ac832f49ad20c1eb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f8031327-1466-4fd3-9fbb-e8a6340fa326/britax_car_seat_without_base_installation.pdf
    • https://uploads.strikinglycdn.com/files/fda7b8ba-075e-465a-ab9a-65cb01cb70b3/dudaj.pdf
    • https://cfff6b0e-fc0f-4d9c-a983-c0e60c8b2bfd.filesusr.com/ugd/c637e3_6d4ad54015b147dab813ea87873088b3.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd5.bin
feabc4f608f6491b61a54450e5787de6630a805a59a278e9cf849bb0e67cae77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD5 5516 bytes
font_01_sfnt_off0000fea6.bin
c6ab3434c69fb5eb35e5412db7de8317ca85e7f190bd55ab7251d8967b8b647a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA6 10548 bytes

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