Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1a05155f90eb27…

MALICIOUS

PDF

77.4 KB Created: 2021-03-23 02:04:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: c8c939d579179796122f6d0f5a041180 SHA-1: b12b6e2b1c904a804122e999ac50638ae88912a5 SHA-256: 6e1a05155f90eb272bf1edc16a1a55daa109305a8a0d2de9c3d14c60a92edc2d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to S3 buckets and other domains, suggesting a link farm or distribution mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://mezovuduw.ru/award?keyword=tarjeton+consulta+anticorrupcion+pdf PDF link annotation
    • http://rozewevojalel.sportsontheweb.net/architecture_studio_companion.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/the_captive_prince_summary.pdfIn PDF document text
    • http://mudikovarew.mygamesonline.org/how_to_write_2000_crore_in_numbers.pdfIn PDF document text
    • http://nakalabaxis.mywebcommunity.org/aide_memoire_commande_linux.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/traitement_sinusite_chronique.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/cbse_11_class_biology_book.pdfIn PDF document text
    • http://ripugusulufiluj.getenjoyment.net/90799427392.pdfIn PDF document text
    • http://legegapepapo.medianewsonline.com/tumedeji.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/39873007119.pdfIn PDF document text
    • http://bepelisufozasep.mywebcommunity.org/71883145732.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/xakapudakadu/zugemiloxi.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/54561073064.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/assassin_s_creed_unity_achievement_guide.pdfIn PDF document text
    • http://mujebik.atwebpages.com/tebajoxug.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/72666573153.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/79984922200.pdfIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_983e6b9059994345a3b471f9cbd05b7c.pdf?index=trueIn PDF document text
    • http://jifisuxevizek.myartsonline.com/xevunutemaw.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/atorvastatin_interactions_with_metformin.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/29818685225.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/24775233789.pdfIn PDF document text
    • https://44eeb0f0-4dc9-4d8b-b3fd-cc7ace98e90e.filesusr.com/ugd/a083a1_ba0fbca07ad2488aa0396aff2a55c0e3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/feseni/m-audio_firewire_410_4-in_10-out_firewire_mobile_recording_interface.pdfIn PDF document text
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_4eefbec26b374d7f8ef2c3e7aafd9212.pdf?index=trueIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_168efbd75e8b4995a58cc7bf4f552c51.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wavunot/28373939139.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_off0000ed80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED80 5172 bytes
SHA-256: 1162820282366fbcb27b7fd7d52e6baee4978e0c35279fea0a8848c8c6cb30f4
font_01_sfnt_off0000ff2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2C 12048 bytes
SHA-256: fd7f4caa689e8bd16d9c898f9b13707b0d3db7cc57b8c6cb74f8b96829ef1863

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