Malicious PDF — malware analysis report

Static analysis result for SHA-256 1217b69aa24e8812…

MALICIOUS

PDF

45.5 KB Created: 2020-11-01 08:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 306677cf6cc896b8ee564ef798364b09 SHA-1: de7cae31a7baca6935b211db446ea79a454a7f8e SHA-256: 1217b69aa24e881246c05d25005fa4bc940255eea6f68322be1e685ffd8dfb2b
94 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 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 1.0000

Heuristics 3

  • 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://ttraff.club/123?keyword=motorola+sbv6220+3.0+modem+optimum In 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/f27f5e5d-7dbf-45bb-9813-a4e32e22a8d7/an_old_pair_of_shoes_tin_whistle_she.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/cfr_21_part_11.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/uh_manoa_spring_2020_parking_pass.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/additive_and_subtractive_bilingualism.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/19132583599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7890/2445/files/download_surgeon_simulator_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82818a03-84ff-4168-9076-5c0aed9f0814/geneva_sound_system.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/fokewuzomujilil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c12b01a-a45b-4d11-b572-97b4832037e7/tijawejudevuvubonisogamuf.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/calendar_2020_january_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/8748/3842/files/zesokibidowezurapetusik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a50877d9-1cc6-4200-b85f-0080fee47244/49403088829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2064/7078/files/whatsapp_apk_latest_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf0ecb9-9b4d-4434-81a1-42e66b0cec1d/jupumodilazalepuvi.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00005e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E91 6812 bytes
SHA-256: 2e0ee37cd64f4c35472631c058407906ad20f0781d2500579fe3f45af03c2431
font_01_sfnt_off00006fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC8 5936 bytes
SHA-256: 97befebd8eae0ab103ab64881be9fef9223d642456c1b2fe028c26f4defb3fdd
font_02_sfnt_off000083e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E9 10828 bytes
SHA-256: 8ed8e0ef987ca92bd628ea1e66182d6a21250bbc9b5266077e739ef9c541e6f3

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