Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d398b3f58d967cc…

MALICIOUS

PDF

66.8 KB Created: 2020-12-22 05:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a89f6022403dc4b394464f932df38163 SHA-1: 1e9d054f33d3fb9930c07ecfce5b1a03b871ccaa SHA-256: 1d398b3f58d967cc508c31922e2a458a8ab97e2e770302ce91cf8be7e9eb99df
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=soccer+manager+2021+football+management+game+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8730fb1f588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404739/normal_5f91f0036b373.pdfIn PDF document text
    • https://masejufubalabej.weebly.com/uploads/1/3/4/3/134388341/b25a168bac3.pdfIn PDF document text
    • https://xinulirolome.weebly.com/uploads/1/3/4/5/134599248/1209046.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/information_about_aids_and_hiv_wikipedia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf10973299f0c5438bf8c/1606217994924/2020_lotus_elise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28b6f871-8888-4904-9cdd-2003588a8b6b/bosunelise.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/69384667851.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf95d1af5bf52c3271566/1606220126144/sanazuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a5f986-f544-464f-9658-9d6c74f20083/13849406585.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50ab95687f52b6b9bd685/t/5fc969d719890c408b1daa21/1607035354056/asphalt_8_hack_no_root.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/youtube_apk_android_police.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_off0000c844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC844 5788 bytes
SHA-256: 1ca514a046032939e4f17c4219124674cc7590326e83898da07f4b60fd822f58
font_01_sfnt_off0000dbee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEE 9916 bytes
SHA-256: 061e46ae8ff5ea7e661e0ba4a179aa23d359861c1b2e77766699713d88723c47

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