Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b039a0229b7c4c3…

MALICIOUS

PDF

82.9 KB Created: 2021-03-18 09:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8d7e73a71cee01fe7625b80687be4238 SHA-1: 5a4be1e9aaa4819f853d25a61b72ede318aff33f SHA-256: 0b039a0229b7c4c3ad0b3ada940a64529786776f08e0a7fd4d4eedaa621fa2b5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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://fokemale.ru/strik?utm_term=how+much+does+cessna+182+cost PDF link annotation
    • http://mibajisokawetu.iblogger.org/52774219408.pdfIn PDF document text
    • http://13millions-warzone.store/88383656821lbn4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_601145e7693fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495409/normal_5ff9ac58edfdb.pdfIn PDF document text
    • https://kebotufu.weebly.com/uploads/1/3/4/7/134735966/josuxa.pdfIn PDF document text
    • http://medyayazilimtr.com/9th_class_ka_english_bookakjr7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450249/normal_6038bf45be8be.pdfIn PDF document text
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/forevutodanejisumafu.pdfIn PDF document text
    • http://salejozokaboruz.22web.org/46178646405.pdfIn PDF document text
    • http://dapabikokewe.iblogger.org/descriptive_words_to_describe_bad_weather.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/nuvolixeluxe3cj5a.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/tinewunazonisn9fl.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/tikofaketonub/rafun.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/monthly_inventory_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/can_you_change_the_battery_in_a_samsung_galaxy_tab_4.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/how_to_file_insurance_claim_for_att_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/advanced_algebra_with_trigonometry_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/cetoprofeno_injetavel_im_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/tafofudug.pdfIn PDF document text
    • http://fofifalog.rf.gd/midevukaduxenoruwewufomu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10408 5484 bytes
SHA-256: 11ec5fd6d1f6d2dced242a81888b4184c82e4a65917da98905020083c3da8730
font_01_sfnt_off0001169b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169B 11712 bytes
SHA-256: 209fbaff3d4d128574df1976a8adc88001b00ca3eef756ac8e1a08816ed55613

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