Malicious PDF — malware analysis report

Static analysis result for SHA-256 f942311125804294…

MALICIOUS

PDF

79.9 KB Created: 2021-03-23 17:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaf163c61690621960478c7d5290e69c SHA-1: 2ca6ae3bdb474dd438f9f0c80137b102c9c2d0db SHA-256: f942311125804294eaf20fb6879f199a0eb8e5a412eb0669f2f467b54aaee387
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains a large number of external links, many hosted on Weebly, suggesting a link farm or SEO spam tactic. The embedded URLs point to various PDF documents, likely intended to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/wix?keyword=apc+back-ups+pro+700+manual
    • https://tepidupelagoxu.weebly.com/uploads/1/3/4/4/134472529/powibefopejik-zumimap.pdf
    • https://jezaxinadi.weebly.com/uploads/1/3/4/5/134597346/6180bf4c.pdf
    • https://ditoramaw.weebly.com/uploads/1/3/4/7/134724618/redizoboj_foxidezo_disitum_roliwepafixegam.pdf
    • https://xexigajusotojuz.weebly.com/uploads/1/3/1/6/131606060/c5d42b51e9.pdf
    • https://cdn.sqhk.co/wekaradukuve/DYhf8up/catfish_cooley_wife_snapchat.pdf
    • https://boripate.weebly.com/uploads/1/3/4/5/134590871/6645950.pdf
    • https://mojurakikaluno.weebly.com/uploads/1/3/1/4/131438245/begafaxom.pdf
    • http://mimudobaros.22web.org/6834353034.pdf
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/481b0d413.pdf
    • https://rawiranuxox.weebly.com/uploads/1/3/4/6/134618620/8da85cbed9b64.pdf
    • http://posuvukapimufes.iblogger.org/53210407140.pdf
    • https://cdn.sqhk.co/radofufalam/H2ibhcO/clash_of_clans_account_sale.pdf
    • https://xemiwiwoxotewa.weebly.com/uploads/1/3/5/3/135325065/f50641fc404.pdf
    • https://cdn.sqhk.co/xubuzivo/hhegfU6/bajikiwano.pdf
    • https://revanesowokaw.weebly.com/uploads/1/3/4/6/134652238/e336137f3298a11.pdf
    • https://cdn.sqhk.co/gegenosuzun/jbjgrQD/video_downloader_iphone_browser.pdf
    • http://miligiwu.iblogger.org/englander_pellet_stove_control_board_problems.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kadozebozedakof.rf.gd/panera_boxed_lunches.pdf
    • https://uploads.strikinglycdn.com/files/4bc361fb-3e8f-40b5-9a03-7c2f1a3d5212/dr_jekyll_and_mr_hyde_movie_2017_dvd.pdf
    • http://xivivafin.rf.gd/ronotovemoru.pdf
    • http://valapapiwusujeg.rf.gd/76575707202.pdf
    • http://nirobow.epizy.com/18861399933.pdf
    • https://uploads.strikinglycdn.com/files/0ebc5efc-cc97-4f11-911a-b29dac5b62fb/tropical_rainforest_description.pdf
    • https://uploads.strikinglycdn.com/files/7efb9622-d7c9-4c40-bce4-8d32af3be23a/can_i_use_google_maps_to_plan_a_route.pdf
    • https://uploads.strikinglycdn.com/files/86b9512f-ba9b-4a8e-82c7-0219dbe773c5/metallica_nothing_else_matters_bass_lesson.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_off0000f8b8.bin
7f02f0ecde3a4fc7cd33dc7cf669fd5bc681eea30d20b03411d75ca62ada23f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B8 5528 bytes
font_01_sfnt_off00010b77.bin
1840230807b0844fe52470f539651758ff28471f59dca640033ef2ce868a8de6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B77 11380 bytes

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