Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2017306178b347…

MALICIOUS

PDF

113.1 KB Created: 2021-03-22 16:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0812a2cafedb512cdf875e4621345b36 SHA-1: e75a47a5bb2ec9eee5b66db144cfbc52218b05df SHA-256: ea2017306178b347ce531a1779c6e152360a891193d24925a4b4edfb1863a470
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm. One of the primary external URLs, 'https://mezovuduw.ru/wix?keyword=asos+sizing+guide+uk', is suspicious and likely leads to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and the presence of many external links suggest an attempt to redirect users to malicious content, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=asos+sizing+guide+uk
    • http://bimonetejatoleb.mygamesonline.org/jisemofijefilutudowa.pdf
    • http://suwefazimim.medianewsonline.com/tubagatolefaxu.pdf
    • https://cdn.sqhk.co/tobamozusaj/AMhfgjT/graphs_of_quadratic_functions_worksheet_with_answers.pdf
    • https://cdn.sqhk.co/nananava/Qjjhaji/ice_wolf_live_wallpaper_hd.pdf
    • https://cdn.sqhk.co/rosisole/jidTZIX/mini_speed_boat_for_sale_craigslist.pdf
    • http://rowexusaje.mypressonline.com/array_in_php_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tozaduliwubega/tom_clancys_ghost_recon_breakpoint_-_playstation_4_review.pdf
    • https://s3.amazonaws.com/vukusa/posugubisoralaki.pdf
    • http://nuwadolonopip.onlinewebshop.net/psalm_51_wisdom_in_the_secret_heart.pdf
    • https://c3d762b3-5d50-4891-ab6d-43710edd2423.filesusr.com/ugd/3254bf_e3a2d84848914578967bb6b6bb0bf410.pdf?index=true
    • https://s3.amazonaws.com/ninazarila/wopado.pdf
    • https://s3.amazonaws.com/dupula/aarum_kaanathe_aarum_ariyathe_ringtone.pdf
    • https://s3.amazonaws.com/dogevazapiwediw/93651732140.pdf
    • https://s3.amazonaws.com/saziwijaxodav/descargar_whatsapp_de_colores_apk_gratis.pdf
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_c833ee2c7c51470c996bc19cc6557e0d.pdf?index=true
    • https://2a26c5f8-c4f8-4af8-830b-7e2c9961bd8e.filesusr.com/ugd/2e4362_792e05243f264f52b49e7873c306dd2d.pdf?index=true
    • https://s3.amazonaws.com/zidenigad/noruzufosotekegagamef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001703c.bin
d7ffd96f0dca91976cf5c2f0ac12339c2fb25205104d0c349ca387e393ddeea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1703C 4560 bytes
font_01_sfnt_off00017fcd.bin
8f296a332d20ce43d3ef058deffc6cf60ba217141f431268628c473100c9523e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17FCD 11632 bytes
font_02_sfnt_off0001a76f.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A76F 4324 bytes

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