Malicious PDF — malware analysis report

Static analysis result for SHA-256 294f3fcc0d4bde93…

MALICIOUS

PDF

73.9 KB Created: 2021-03-22 16:39:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 0876aaa5f3e27c0a0ad0237f017668e2 SHA-1: 5b0d2c3ba975c635641300f73f11640a92d1f878 SHA-256: 294f3fcc0d4bde931f582f20646f15a7d7edfdba3b42e5c91092d5eb29506d7f
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=d+-+day+invasion+map+worksheet', which is likely used to redirect the user to a phishing or malware-hosting site. The PDF also functions as a link farm, further supporting its role in malicious redirection.

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 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://maypoin.ru/wix?keyword=d+-+day+invasion+map+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5fd1986b699ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_600eefc2eac69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_601b90429adf7.pdfIn PDF document text
    • http://xigukogotawat.iblogger.org/27661386261.pdfIn PDF document text
    • http://fametasubub.22web.org/66559687158.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/notegilumazivuboge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_601c6ba9ae6dc.pdfIn PDF document text
    • http://pasikufopubiwo.mypressonline.com/kanukomemuko.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://uploads.strikinglycdn.com/files/8796f75e-4d61-4f1f-8c12-089a37b59110/84_charing_cross_road_movie_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceee35d6-800a-45e2-b515-5cd3ba56372b/synonym_and_antonym_lesson_plans_4th_grade.pdfIn PDF document text
    • https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_00af4c7922b34ab982634f71bd3506ba.pdf?index=trueIn PDF document text
    • https://b3df6b87-ca8d-4c26-b815-8c697753997b.filesusr.com/ugd/896a32_a016100987564a81a7b5d71fb830ef1e.pdf?index=trueIn PDF document text
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_5da250c98b554d33a248db8d8553e669.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/122d9625-06be-45db-a61d-57ddfc47deeb/what_is_the_best_14ft_trampoline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0319a98-9b6b-4cbd-8518-d2f0939c207b/breville_juice_fountain.pdfIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_74c744ef649b4795bdfd8d263c00e247.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/28fce902-137a-4b9e-848a-c775af3accd0/sarumaboxidamew.pdfIn PDF document text
    • http://lozisuvuxinosog.epizy.com/health_hygiene_and_sanitation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46C 5304 bytes
SHA-256: faa7273a753519124f2565f34f8eb3e25c4fad0db21b4f01dd6d2437efc57b9c
font_01_sfnt_off0000e66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66D 10572 bytes
SHA-256: a2c4a2feab9100ab17603d296e75b26554b38d4f156f418d5b8c261febf622ad
font_02_sfnt_off00010a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A68 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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