Malicious PDF — malware analysis report

Static analysis result for SHA-256 64259c1290a65f33…

MALICIOUS

PDF

51.8 KB Created: 2020-10-29 01:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 36db697677e0e2f18bbccecc9066b38b SHA-1: dd139aaed2688f01488864bf6883d6ad273375c6 SHA-256: 64259c1290a65f330d08715eb4b780a80d5210244d2947386fc6bcf1736c3f0e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?keyword=la+ley+de+la+atraccion+libro+gratis In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f89fda0393b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5f89b115aa09a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f92ab8372aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f97c0ccb9121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5f8a7e4c53fb6.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://cdn.shopify.com/s/files/1/0499/9774/2230/files/supimobawafurokuzut.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/suzuki_ds80_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3508/5978/files/90454811565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1748/6503/files/driver_manual_ct_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87d47847-1302-4666-994c-d3faea377596/83091660046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2471/2597/files/grow_gorgeous_hair_growth_serum_intense_ingredients.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2576/2984/files/tenterfield_saddler_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3743/2245/files/21760188629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5609b3b7-d6d9-4c4a-97b3-b1b26b8b7e73/dewujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9212af46-8e43-42e6-a540-07f1a590d860/muvosaburir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfe7526-8239-4e16-bc84-acf314c6dfa3/bepoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1358/5047/files/65694603369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4295/3154/files/49528120422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9604/2398/files/39241156657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce5e1d1-60ec-405a-9385-74e9ca83e488/jixuxadin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2587/3050/files/55010507193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/minecraft_mods_1.6.4.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/nijewu.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_off00007cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF1 5076 bytes
SHA-256: 92a89f59c890f93574498184c732b09c59533a6b658a5e7f23bdb03370485886
font_01_sfnt_off00008e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E40 11052 bytes
SHA-256: 5ce82b6c746495a4fab159dfec905655be88ca8a60e994af8826cb54f9a85419
font_02_sfnt_off0000b1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71