Malicious PDF — malware analysis report

Static analysis result for SHA-256 9219bfc02b36e4b3…

MALICIOUS

PDF

74.1 KB Created: 2021-05-23 01:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c340d5180564c0c77aa1237d6d070a09 SHA-1: dd32cb566dfc2b2a322cb4486ae4d498131dd870 SHA-256: 9219bfc02b36e4b396926d180c95af2f43fbe248bfe6ca4fa6982de0b8f2cdfe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link that, when clicked, directs the user to a URL seemingly offering a game download. This is a common phishing tactic to trick users into downloading potentially malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL is the primary indicator of compromise.

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://crophysi.ru/strik?utm_term=iron+man+game+download+ppsspp PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500679/normal_602e3ac71fabf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401519/normal_6059bb6850f9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_606d180aac339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477181/normal_60392479d64f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444648/normal_60639da407738.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5d961f-8e28-4dd6-a235-d001a8c0a1c7/elements_of_journalism_kovach_and_rosenstiel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dee01840-8460-4650-a003-96998aedf122/different_biomes_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c46adc5-3462-44dd-8fca-0e998fc3c455/61941531559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfeae2fd-a079-40df-9099-e018396cac09/5802321291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00565744-9867-4865-a2bf-4ec9ef885198/xarigubalejufofurafufozav.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/vevubujidipafupumejonupen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67a6b5a3-1bbe-4702-86a4-fd6103743832/woxoxuwatepituvowiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d8744c-cc25-44ed-a755-6ae0b363743e/7432047537.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/chandramukhi_songs_free_masstamilan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/add929de-1ff5-4eff-967f-318582f32353/35219904177.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/echo_weed_eater_wont_cold_start.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/54132853220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ac9481-6b36-494c-acca-c4ba064f0fc6/59964358955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db8c6052-d491-4172-96ff-f53c6acc6d78/goxezopubab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e79d7513-bd6d-441c-92b5-d6b6fbb00266/fupivuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e41028d0-8da8-4ca0-af43-42f69bc69bbe/jesus_storybook_bible_christmas_story.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/egyptian_pharaohs_worksheet.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_off0000e203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE203 5308 bytes
SHA-256: 1a34728ef74569c111211bea928a6d3a9b4bf94a290a4b5454cbeb3d368e4423
font_01_sfnt_off0000f409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF409 11016 bytes
SHA-256: ab65621fc629ea84e8a58f14d0776b37726bbcc495fc60ee714fca6329807963

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