Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ac2778b62237ee…

MALICIOUS

PDF

50.0 KB Created: 2020-10-26 12:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6a5bef2966e3d536ee226bdbae35fb75 SHA-1: 828330ed102eef8d48a917a2b5acf4ba209d3152 SHA-256: 09ac2778b62237ee2060d344126f9ca7918eebe7482520896f292826bc2e8eef
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external resources, including a critical link to a known malicious redirector at 'https://ggtraff.ru/aws?keyword=supply+chain+management+pdf+articles'. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to direct users to malicious infrastructure. The ML classifier also flagged this PDF with high confidence.

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://ggtraff.ru/aws?keyword=supply+chain+management+pdf+articles In PDF document text
    • https://cdn-cms.f-static.net/uploads/4409092/normal_5f9302b1383d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f872ac12b57f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_5f95ae875ff6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_5f965d95a6497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5f91e2a9025d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f8ba39286d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8717ae221f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_5f92297668dd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8a47f95ad06.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/4af6af8969b2be.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/jopuvimilena.pdfIn PDF document text
    • https://tinalolovini.weebly.com/uploads/1/3/4/3/134371967/2240134.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://s3.amazonaws.com/muvojugejoxip/lujegadas.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/96354867191.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/black_acting_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/xexekurizimekemojifimar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/113ce2ed-f33b-4164-a15c-e8067e188d24/curso_tarot_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f6afcd3-c3a1-4f68-b31f-829722aa0127/wireless_adapter_for_samsung_smart_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12accd4b-d2d1-4077-8e97-b99a1275f2cd/renavuluxizuruxog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc9fd0e6-7c6c-407a-b733-5ff16ccff8c7/banajitisugo.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/sikoxulakabazeguzudisinog.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/gemar.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/zewuvimimef.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/pugorewuxijikopoxo.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_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 5548 bytes
SHA-256: 9fb64b20fed2ad22e3340b5c151df82c94711ab4433bccec54382080c1929caf
font_01_sfnt_off000087d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D8 10612 bytes
SHA-256: 4daf8dd817ba81909c89d2144a3ccc9c218c589518f99346309b834ec21eda97
font_02_sfnt_off0000abcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABCF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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