Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd777596f1de5e3…

MALICIOUS

PDF

70.0 KB Created: 2020-12-05 05:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 691e9d5a5b80aa94b851cecc64fae2de SHA-1: 93f62e180cd84bd84654f04419d4e6ba244e17aa SHA-256: ddd777596f1de5e30c09878a13b78e593c1621c87df949421e25babde02cc5ad
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 0.9997

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
  • 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://ggtraff.ru/strik?utm_term=bellevue+recycling+center In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_5fb032d1c6a8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417659/normal_5fa5a956d3b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385412/normal_5f93925940a31.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://static1.squarespace.com/static/5fc6fcd4d8c3650128350c97/t/5fca430681b71b4085a1bb68/1607090952003/petit_singe_qui_mange_une_banane.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50e3cbda9c57a97d8e746/t/5fc72c2fc7c45a5eafa147f9/1606888495694/16438497453.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/14961781382.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/divisoria_street_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/zujevazatamonaguwok.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/bottom_navigation_android_xamarin_forms.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae857d0c8f249d464d7c/t/5fc7f527bd4f1f20252646a4/1606939944003/97474204295.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d92f11f6a4198485658d/t/5fc1665a173fb5383bd7247e/1606510172259/ram_apk_pro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f4078787e879896c419e/t/5fc16c0d3570fb44d1383b17/1606511630457/the_224_valkyrie.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_off0000c9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B5 4564 bytes
SHA-256: a04cef0fc7845b7037328b90a674dcf88468349775926f82414ba965f8160fad
font_01_sfnt_off0000d956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD956 10472 bytes
SHA-256: 962cbf6c44382fce6ba1c81740d4e0ad2e4496780a171af691da3885c637d3a5
font_02_sfnt_off0000fd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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