Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba44abef5dc01d0a…

MALICIOUS

PDF

73.9 KB Created: 2021-03-10 08:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1e3764c3b878f7060198ac689fe4d7fe SHA-1: 814051e8aa94c42220656967bd0343c9a20dd8e5 SHA-256: ba44abef5dc01d0ab770b50cd0a51a5b84972fced12b79e4d89e5ac971f0826f
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple external URIs, with a primary focus on 'resalured.ru' and 'kitigaw.22web.org', suggesting these are used for phishing or to host further malicious content. The document body, though heavily obfuscated, contains keywords related to 'worksheet' and 'pdf', aligning with the 'Pdf.Phishing.Trojan' detection name.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=anomalie+des+wassers+arbeitsblatt+pdf PDF link annotation
    • http://kitigaw.22web.org/terraform_atlantis_workflow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://godawawisegi.epizy.com/64927287381.pdfIn PDF document text
    • https://f33d1b56-f518-462b-b61f-c1b5c1ba661c.filesusr.com/ugd/1c44ce_9fcb4ca7ec9746b591143f6e0bc47eec.pdf?index=trueIn PDF document text
    • http://kusotuwomaru.epizy.com/vibovadafopitikavuv.pdfIn PDF document text
    • https://5e446c31-fcb6-4427-a178-91ee45bbff8b.filesusr.com/ugd/4e76b8_2d566484ee5841b4b2347cd41baea68d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/fivikunimakufevar.pdfIn PDF document text
    • http://sinejelubomidi.epizy.com/26884740583.pdfIn PDF document text
    • http://pugetuwozijeso.rf.gd/total_conquest_hack_game_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40593ce2-9b2d-4537-ab8f-7a5e31a883c6/shark_euro_pro_x_sewing_machine_9110.pdfIn PDF document text
    • https://91953a53-6f32-4f2a-9b2e-0f954541ff31.filesusr.com/ugd/dad90e_1fdecc68b114434a9aefd85763a57c67.pdf?index=trueIn PDF document text
    • http://zavivemigowoson.epizy.com/pascals_triangle_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0c72b9-1163-4177-8209-0997ce6b13b6/whats_the_healthiest_thing_at_taco_bell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/822045c1-ca86-4e8c-8e64-27955d2df92b/nojibuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68096a51-29d3-4ee3-840e-ec87bc81ef74/54589970628.pdfIn PDF document text
    • http://fisugefeka.rf.gd/9019843485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c59668b3-9d28-404d-997b-cd9c32266919/legaw.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/67241475176.pdfIn PDF document text
    • https://c480cc3d-c044-45b7-a7fa-747782367dcd.filesusr.com/ugd/a26f59_563174fc05db47dbba8d5aa8be2797bd.pdf?index=trueIn PDF document text
    • http://damedosa.rf.gd/lezedibameta.pdfIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_e0bf5e22c4574a7cba0f295d250860d5.pdf?index=trueIn 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_off0000e18d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18D 5408 bytes
SHA-256: 5fb7922df4eed2ed577ff4deee73003ae8c8b93bab53c5baa52eca68c719b130
font_01_sfnt_off0000f3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 11012 bytes
SHA-256: 53fe101ad3b22c3123e488a08d82656fd7a4367ca97d4844060918fe6667f9fd

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