Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b7c973baff49a4…

MALICIOUS

PDF

85.2 KB Created: 2021-03-24 21:25:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a757e76e09b234cd37ba9f7b4335f89d SHA-1: 187a27b754c5304b816bc0d03ded1de899ba9a78 SHA-256: 84b7c973baff49a4aa37b2373699606ddc42790a721cb3e91b1cd6307ee1cc70
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of a URL related to 'fake drivers license maker' indicates a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely leading to a second-stage download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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://dafemum.ru/wix?keyword=fake+drivers+license+maker+online+bd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413455/normal_604a80f9ddd44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_601bcda49d20f.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/CtdcTja/dogfight_games_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/wamiratena/hijjjyd/92930500927.pdfIn PDF document text
    • https://cdn.sqhk.co/tunaluvum/nhbJ1te/tufojigegugonanuzilifi.pdfIn PDF document text
    • http://libutulidux.medianewsonline.com/49752993389.pdfIn PDF document text
    • http://tarekupi.scienceontheweb.net/factors_affecting_media_selection_in_advertising.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423442/normal_604d754c7e321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483104/normal_6048caedbad6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_c096559c8c284c1d99a73742ef9ade70.pdf?index=trueIn PDF document text
    • http://gibidapasajug.atwebpages.com/aquifer_types.pdfIn PDF document text
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_7ee22323dbe446fd8be693a98602f6a9.pdf?index=trueIn PDF document text
    • http://womawujun.atwebpages.com/vezutodi.pdfIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_0ab24237af984893a396befbd6a15714.pdf?index=trueIn PDF document text
    • https://2b01876c-5741-4e94-bfb6-30973e4a6517.filesusr.com/ugd/45d688_7ecb00834329428fa97413ea7133c02c.pdf?index=trueIn PDF document text
    • https://97e6e6c8-040d-427c-ad66-6ef02350ae38.filesusr.com/ugd/9c523c_0786ca2badf44522993cb179573cfa66.pdf?index=trueIn PDF document text
    • https://451b78f8-089e-4d4d-bc4b-60abb621f7e6.filesusr.com/ugd/7ef0dc_b17c23bacc3546b6b26071600f681917.pdf?index=trueIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_4d2874104579456fa476553e64cf29bc.pdf?index=trueIn PDF document text
    • https://327bbe42-9aa5-4ca0-80e5-6c9857058a26.filesusr.com/ugd/2b870b_9d8f3fd550b04f8c9eaf992ae20245b2.pdf?index=trueIn PDF document text
    • https://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_a06dfb8f368248f58b60164f81eaf850.pdf?index=trueIn PDF document text
    • https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_634274d4c3754da6a50b0278b60af56f.pdf?index=trueIn PDF document text
    • https://e4dd5bf8-bd13-43e3-b37b-9624b2564f03.filesusr.com/ugd/093416_5aacba85ca0c4462927c4487932fa7c6.pdf?index=trueIn PDF document text
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_5e43e82399c444a083a207380ac31e9d.pdf?index=trueIn PDF document text
    • https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_1a1224c1cccc4ddfb4c3431dfe591f6b.pdf?index=trueIn 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_off0001095f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095F 5304 bytes
SHA-256: 50c210dc14528180730fe5318dea2d78247cba400a044383cd7cfb999ece75d3
font_01_sfnt_off00011b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B60 12896 bytes
SHA-256: d320c3eef375c90ef761dc5f0d3b0469cd85a94b85da70f8808a5391a304d808

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