Malicious PDF — malware analysis report

Static analysis result for SHA-256 9227c75cda550b75…

MALICIOUS

PDF

42.4 KB Created: 2020-10-31 09:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ba33cb0e0f0db602a927115bd2e5083f SHA-1: 9c6c8c381b972b441b45304170e90e5f7cde8a07 SHA-256: 9227c75cda550b7517c2b5c2015c2309e377db3b5e5690d758abb9569f36cd1b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains numerous embedded links, with at least one identified as a known malicious redirector: https://cctraff.ru/123?keyword=guide+castlevania+aria+of+sorrow. The document appears to be a link farm designed to direct users to potentially harmful websites, likely as part of a phishing or scam campaign.

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 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.
  • 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://cctraff.ru/123?keyword=guide+castlevania+aria+of+sorrow In PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/fopudexuwadazuwa.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/ledasu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f89b97e37c25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5f954689d11bc.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdfIn PDF document text
    • https://dawozonejuveru.weebly.com/uploads/1/3/4/4/134489779/5021852.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/remajadenenibot-baped-lunow-dabutorevazewas.pdfIn PDF document text
    • https://puvujoda.weebly.com/uploads/1/3/4/3/134326666/gixum-tutetipadotada-nujawonigeg-juzebiforixilim.pdfIn 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/bcc72193-c580-49df-aa50-12c6576bc6e0/kefapijitobatujigatagole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6663/9014/files/medieval_siege_weapons_mangonel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2140c554-e3ab-45a4-af84-0cef814c4c08/everybody_writes_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22f6c6f0-6738-4c58-8eb9-002f35da04ef/29578745103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d422e3d2-92fb-4936-b171-1d0acc8613bc/33861561720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd8d4c33-6cb0-4639-af75-d1526539367f/54099010171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/fowevodulasuvarimimoduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92dc6445-1082-4520-8d78-485f16c0ef02/43398215848.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_off0000691c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691C 5196 bytes
SHA-256: 1aae3a8a2dc0bb974f3def05aa351f8211363c1012aa823cc7543d7b61772176
font_01_sfnt_off00007af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF0 9828 bytes
SHA-256: 6e22ce8f47af7e952bd16c6571dbd8ee959ad1947d8cc7f5ab2340abda62a5cd

Open this report in the interactive analyzer, or submit your own file for analysis.