Malicious PDF — malware analysis report

Static analysis result for SHA-256 e063c66867bcd54d…

MALICIOUS

PDF

77.1 KB Created: 2021-04-27 18:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03075301bf151fbc57eeed921dae2f96 SHA-1: de6518a0ed50890695265c9f84604a7073fbfe3b SHA-256: e063c66867bcd54d30112f3b0ee90c90673445745cf85f32db1fcf78649e581c
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are dynamically generated, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs point to suspicious domains, further supporting the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/strik?utm_term=where+to+stream+the+stand
    • https://cdn.sqhk.co/govazofaj/iCSjjia/human_resource_management_strategies_examples.pdf
    • http://kokolonesafu.getenjoyment.net/30959699917.pdf
    • http://wisevesimo.22web.org/east_asia_physical_map_worksheet.pdf
    • http://kafidovomiguvo.mywebcommunity.org/us_history_textbook_mcgraw_hill_online.pdf
    • https://cdn.sqhk.co/miwizawi/fghX1jj/gacha_life_pictures_easy_to_draw.pdf
    • http://joxitikoki.getenjoyment.net/tojedim.pdf
    • https://cdn.sqhk.co/pazakazagoz/eWeijZg/33993992070.pdf
    • https://cdn.sqhk.co/kizofapekeku/0gidkLq/18387807613.pdf
    • http://komozazene.getenjoyment.net/harris_algebraic_geometry_a_first_course.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6e345194-e688-4037-aa24-2ff230a16836.filesusr.com/ugd/ce9fe1_255b3cc092de4945b26187972f3b7fa8.pdf?index=true
    • http://xelurutokige.rf.gd/sibedewugutosad.pdf
    • https://f7b0ef4b-317e-4f07-901b-4de91a029b50.filesusr.com/ugd/50f142_a4e9bd66a048400198d5d74d04fa64ce.pdf?index=true
    • https://0dd0cd87-80d3-4eb5-b9c6-73c43c3a6fca.filesusr.com/ugd/f0b6b3_7d5883fbad854b8cb63c55a8606b436c.pdf?index=true
    • http://jilibozab.epizy.com/56544613.pdf
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_4d77ea623d8141a09b4a67149e0b03c4.pdf?index=true
    • http://talakukatutevib.epizy.com/yard_machine_edger_3.5_hp_blade.pdf
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_b5e495abf6d846ffb9e379d194bd97f1.pdf?index=true
    • http://rozopujonabesix.epizy.com/supatapukomezureduneje.pdf
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_f6a42c1fd11d4e9882714aca38ac075a.pdf?index=true
    • http://gozuketitara.onlinewebshop.net/1055071103.pdf
    • http://giwoxut.rf.gd/why_do_my_eyes_look_sunken_and_dark.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef10.bin
ba686d45265e3e3c37636009ed348c2fd9bc9bbff861e68f1369d6c55a03a6fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF10 5048 bytes
font_01_sfnt_off00010015.bin
cd717922b13bfc30ef0b41f1249eb31324b41f9fa97556ddef53a4ba73dc03d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10015 11532 bytes

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