Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c6b3baa3a82307…

MALICIOUS

PDF

84.2 KB Created: 2021-05-14 07:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0302fbaf4ebda9f13afc53a184b69ed1 SHA-1: 54c93e11a2383e2be8590937e02fc759af714300 SHA-256: 88c6b3baa3a8230740716f17930d27e31923d953658c064038f5f3bf994bec91
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=what+does+the+bible+say+about+a+cheating+spouse PDF link annotation
    • https://lumikefobebodas.weebly.com/uploads/1/3/4/3/134324067/c23f92.pdfIn PDF document text
    • http://rirenanevigi.22web.org/business_model_canvas_template_online.pdfIn PDF document text
    • http://bakijimape.22web.org/michael_addition_reaction.pdfIn PDF document text
    • https://rugexosijebup.weebly.com/uploads/1/3/4/0/134017508/revasipuzuregoriwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xoxaneral/template_training_and_development_plan_for_employees.pdfIn PDF document text
    • https://64b67c6e-fbbd-4787-add8-9ed3e274c95c.filesusr.com/ugd/eb6612_b0a440288710464a9e4f781a15ed17aa.pdf?index=trueIn PDF document text
    • http://sonisan.epizy.com/barriers_to_effective_communication.pdfIn PDF document text
    • https://2c5a832e-93c4-4ab0-bef0-969ef348d747.filesusr.com/ugd/cc5daa_578e25f6a0de4c5d8a001b3da3d92c72.pdf?index=trueIn PDF document text
    • http://donusifitaki.rf.gd/43389600790.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/esl_my_family_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/77772112196.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/walmart_food_store_levittown_new_york.pdfIn PDF document text
    • http://zomufebike.epizy.com/final_fantasy_liege_of_the_lake_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/can_i_use_roku_remote_app_without_wifi.pdfIn PDF document text
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_c721f8f788654896b1bb375921a0ef01.pdf?index=trueIn PDF document text
    • http://titarejidawe.epizy.com/the_crystal_bible_judy_hall.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/jowopevolijesovugefo.pdfIn PDF document text
    • https://f5f74d4f-f804-4d9b-9bfa-9964b2756261.filesusr.com/ugd/e389b3_d762988ddfb84c8a839ed5a2b5263879.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pasutiz/able_to_extract_professional_7._0_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD73 5376 bytes
SHA-256: 9027b8700067849e8f7d45351d2416b852ab07d6cf2f0f74e2dabdfc0cb36dea
font_01_sfnt_off00010fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC4 10436 bytes
SHA-256: efaffeb759a6a18334dd0f36ddb9ba9a82157f99c43e9a6db6abed7c70b751cc
font_02_sfnt_off0001337f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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