Malicious PDF — malware analysis report

Static analysis result for SHA-256 20018cdff214197d…

MALICIOUS

PDF

79.1 KB Created: 2021-03-25 06:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc7a827479401b3741fc43e38be7c709 SHA-1: 44bac051c7bdfa2b933b70b3ea6016bc2f7ba11c SHA-256: 20018cdff214197ddf0e92f120b2a6afe6b8fde9fcddaa8349e10d3dd00622d7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by multiple engines, including a high-confidence ML classifier and ClamAV, which identified it as a phishing trojan. The embedded URL points to a suspicious domain, suggesting an attempt to redirect users to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://resalured.ru/strik?utm_term=polaris+office+app+android
    • http://jekenufakewe.mypressonline.com/nivupifofogazobozolo.pdf
    • http://mojadejazisapa.sportsontheweb.net/walt_disney_world_schedule_2021.pdf
    • https://cdn.sqhk.co/xiladuxe/hfjdqjd/66437326879.pdf
    • http://mamefumiwuto.mywebcommunity.org/argonautas_do_pacfico_ocidental_introduo.pdf
    • http://bumasujofoj.getenjoyment.net/is_bbg_good_for_runners.pdf
    • http://kimokabif.medianewsonline.com/ba_1st_year_education_book_download.pdf
    • http://gukiduwonaxinef.getenjoyment.net/87640375943.pdf
    • https://cdn.sqhk.co/wefegiwezon/jgXCnjg/58553398464.pdf
    • http://gekodejevotug.medianewsonline.com/jimixu.pdf
    • https://cdn.sqhk.co/fitamorigob/Kha8n00/monesojes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rofuvawitarul.atwebpages.com/norikej.pdf
    • https://s3.amazonaws.com/masevewi/que_es_la_ley_marcial_yahoo.pdf
    • https://s3.amazonaws.com/purawuma/food_handlers_card_riverside_county_answers.pdf
    • https://uploads.strikinglycdn.com/files/7dc686df-4976-448d-8685-fd4b67391be9/letubulasutixuvujapezasux.pdf
    • https://uploads.strikinglycdn.com/files/1948883b-15a9-4f5c-94a5-e610a03121ac/mibojasosamud.pdf
    • https://uploads.strikinglycdn.com/files/a5104da6-2d77-4bd3-8f09-bef86273d0c7/5th_grade_english_worksheets_grammar.pdf
    • https://uploads.strikinglycdn.com/files/809be297-9cb4-4949-811d-42c59f6085cc/what_does_a_scientific_apparatus_mean.pdf
    • http://widifusi.myartsonline.com/womens_weight_loss_workout_plan.pdf
    • https://s3.amazonaws.com/litunux/92024986880.pdf
    • https://uploads.strikinglycdn.com/files/6646053e-85d2-4d12-9a69-73d757527cec/what_is_the_meaning_of_connectors_in_english_grammar.pdf
    • https://s3.amazonaws.com/guwutivupudutu/basibalokez.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_off0000f7ba.bin
3e4c26af2f884c5590fe07f654bd02a876e7e312d01b680d251a87670598f7ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BA 5152 bytes
font_01_sfnt_off00010952.bin
7c66f15ac13f063a4a7eff44eb00fe01ccce660f5927f5952592c8ac1a96c424
pdf-font-stream PDF embedded font (sfnt) at offset 0x10952 11340 bytes