Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fe97a9812229ef…

MALICIOUS

PDF

106.1 KB Created: 2021-02-26 18:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d0cc5e14d167e531c8182cbaaeffb0b8 SHA-1: 56131e7d471f1b96a5f2d4828a1f06f177d26dc2 SHA-256: 22fe97a9812229ef11af9abfa0980d50ee2845e5a0e697b4e95171938eea3f22
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are designed to redirect users to potentially malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm for SEO purposes, likely to host phishing or malware distribution pages. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/wix?keyword=india+before+europe+pdf+free+download PDF link annotation
    • http://rowowesofazov.medianewsonline.com/pathfinder_character_sheet_fillable.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409799/normal_602d7f56c0102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_6019dab71ec82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5fd14d8962baf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446263/normal_602b8eb611e95.pdfIn PDF document text
    • http://draiwenstore.online/gajarututa95ys0.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/loxidutudetofebakosup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426085/normal_600e8aaddb991.pdfIn PDF document text
    • http://freehookup.xyz/librito_azul_conny_mendez_gratispa3lj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409092/normal_5fc9dadb75437.pdfIn PDF document text
    • http://lg-supportteam.com/43540378324ru07q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459636/normal_5fe9d4791f13f.pdfIn PDF document text
    • http://acupofjacob.com/34769600522jqnpg.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
    • http://liroporuki.myartsonline.com/31727142742.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/63107270396.pdfIn PDF document text
    • http://livirava.atwebpages.com/different_types_of_brain_teasers.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_off00015787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15787 4828 bytes
SHA-256: 63b6c522c780aeb3a4ef91eecbf8455d0c62d529903a792b0f6eeb939e71349b
font_01_sfnt_off000167fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167FC 10668 bytes
SHA-256: 17cb7e18404e73e08351e4eb21c93ff8b0fe6aaf1ef8fb609d0bb4de3fff21d9
font_02_sfnt_off00018c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C3D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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