Malicious PDF — malware analysis report

Static analysis result for SHA-256 5330c003105efe4b…

MALICIOUS

PDF

59.3 KB Created: 2020-12-20 06:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fbd14ebd27ce52bd71c1ed24edfe829b SHA-1: 6f8af7e77dbe1d02f3ab8aa24a91322d508bbc46 SHA-256: 5330c003105efe4b5cae361e8204b7623eecd422d75219ed00970c0e09021231
154 Risk Score

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 0.9996

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://ggtraff.ru/123?utm_term=roblox+fly+hack+code In PDF document text
    • https://cdn-cms.f-static.net/uploads/4447450/normal_5fd2534ebf9b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414161/normal_5fd93c6c734c7.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/rujimidujek/android_studio_enable_auto_import.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d2deea4a794d56670281/t/5fcd68ad8a55f2188b8b4a07/1607297198450/sanatorium_meaning_in_english_dictionary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3486312facd59cebc5192/t/5fc4f5e43485235c8661bce2/1606743525365/57606915673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa073d41-f367-4fd5-a379-75528fc88001/jezezavulokoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35f70134-329e-439f-bc8e-397c40873e50/71686026575.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/itunes_gift_card_generator_pc_download.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/android_tv_box_s8_max.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1a731d5d775a7853633f/1606228595846/drastic_paid_apk_no_root.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65d7b5687f52b6ba6648e/t/5fd6eb0b0f11661d4c4005e7/1607920395752/m._u._g._e._n_android_jojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3b4968-009c-4206-ae05-9cb8626428b8/torokofubak.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/free_omegle_video_call_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bf007d-d254-4d12-9982-c4294a1cefea/54289671160.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_off0000adbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBE 5216 bytes
SHA-256: d636c0f34a3a26279e41df3fc60c11fb7e3c59a7eaa33a49c4d61f98423ebed5
font_01_sfnt_off0000bf8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF8E 9676 bytes
SHA-256: f023b1664e0c02711a5dfe5d075c32c6ede31ea9ea954242947eb7ce0ec22aad