Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8b550cb8d6dd3e…

MALICIOUS

PDF

114.8 KB Created: 2021-04-09 10:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 616641e27a76dce786b83611091ff3c6 SHA-1: c64408820d72c397a94ebbf61c71fa8208f8d3c2 SHA-256: eb8b550cb8d6dd3e1f2f901df0aa0f4eaf67a73e342838feeccc97dbbcde2e17
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. The PDF_SEO_LINK_FARM heuristic identified a large number of external links, with one pointing to https://muzobaxokeze.weebly.com/uploads/1/3/2/6/132682229/9123475.pdf, suggesting a link farm or phishing attempt. The presence of embedded URLs and the overall structure strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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.
  • 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://botokaw.ru/strik?utm_term=roomba+960+vs+980+pet+hair PDF link annotation
    • https://muzobaxokeze.weebly.com/uploads/1/3/2/6/132682229/9123475.pdfIn PDF document text
    • https://lakerevuko.weebly.com/uploads/1/3/4/6/134654656/jomemixaf-jagutiz-mopedexafo.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/vnB1ic7/boomerang_instagram_story_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/ibgf0HI/zikufirenopi.pdfIn PDF document text
    • https://forabuluzasojar.weebly.com/uploads/1/3/5/3/135303956/daa944f7.pdfIn PDF document text
    • http://gavediteriremuv.medianewsonline.com/50475724868.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/7ahi8cX/diableros_zombie_rpg_shooter_mod_apk.pdfIn PDF document text
    • https://bowasizavaxilek.weebly.com/uploads/1/3/4/0/134042597/kuxopisimilepesuti.pdfIn PDF document text
    • https://mirafovunezozur.weebly.com/uploads/1/3/4/3/134339146/9af78.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/pimosad_fusozipifi_balada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/issue_log_sheet.pdfIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_1f8d05c3559e422bb9c048cb3d1349fa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/netinuwa/sekewisoligavad.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/fikeredabuvagomorisamenaf.pdfIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_b4798522441a46d7b2ad890f0e2c073b.pdf?index=trueIn PDF document text
    • https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_1a4497a980c042e1b5ed8e40dac220f8.pdf?index=trueIn PDF document text
    • http://domebiwek.myartsonline.com/63425544795.pdfIn PDF document text
    • http://xamukipadu.myartsonline.com/a_history_of_islamic_law_n._j._coulson.pdfIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_176f49764f214cd2892d203f6ac6005f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/59718709490.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000179d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179D5 5880 bytes
SHA-256: 86c3410bbeb9a78c4fbcb526496b098e790fa342ad3732643aa056f9229965ea
font_01_sfnt_off00018d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D9C 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0001962a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1962A 11524 bytes
SHA-256: 5edafc3136c335d9db52bf558d4221322aefc5acdb839adb3f85f2a97de35115

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