Malicious PDF — malware analysis report

Static analysis result for SHA-256 563436c31666e9d3…

MALICIOUS

PDF

75.4 KB Created: 2021-03-02 02:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1fc4ee924f057839451ca772f8e9232b SHA-1: 34b3aafb8df03c5bda9106093120923654f83814 SHA-256: 563436c31666e9d30ab0d11980a8ce698b488bfe1c3b8f83d5ce22ebfb7ad3bf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, disguised as a worksheet with answers. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/wix?keyword=the+gettysburg+address+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd64aa7c7b3c.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/ibgibjg/bahubali_the_game_hack_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475715/normal_5fccaea079356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483345/normal_5fe70f0346a05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420930/normal_5ffe00b68260e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485172/normal_5fcbe22416043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_60349ec41c054.pdfIn PDF document text
    • http://drive4mclaneaustell.com/407469968203rcor.pdfIn PDF document text
    • https://cdn.sqhk.co/dekawako/W2xTghr/77222557805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_5fd6fb8124fef.pdfIn PDF document text
    • https://cdn.sqhk.co/duravukikemo/iigjOgi/cute_tumblr_photoshoots.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_601130be5ae26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_601452cabeb4e.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://s3.amazonaws.com/dobikasukavu/medtronic_carelink_uploader.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/godidoforemelerar.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_off0000dc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC93 5236 bytes
SHA-256: fe2eb4144004740164546a4b6879580bba2e4a5b3437b775a4e40b731433872a
font_01_sfnt_off0000ee6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6A 10536 bytes
SHA-256: 8588ed25fa96457b187cf85375e88e206567a3a53542b36e88fd2b87d2e45d69
font_02_sfnt_off00011249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11249 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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