Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc32a8d6be5dc2bb…

MALICIOUS

PDF

38.9 KB Created: 2020-10-11 08:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 05576aa443017919db6791cd90ef49eb SHA-1: f3a890924a3af62f49f5a8c8bd50f09a6b0e3743 SHA-256: bc32a8d6be5dc2bbdab108f4d59a6091daea7311e075ff2faffe2417ff7fa59b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirectors and link farms. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

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://ttraff.link/pify?keyword=ozark+trail+lantern+speaker In PDF document text
    • http://files.johnnierogersphotography.com/uploads/1/3/0/9/130969659/ditode.pdfIn PDF document text
    • http://gamozag.mzandrews.com/uploads/1/3/1/4/131438800/a160529f41d.pdfIn PDF document text
    • http://ximoja.fragrancesandmore7.com/uploads/1/3/1/8/131856435/9d9d92.pdfIn PDF document text
    • https://site-1043222.mozfiles.com/files/1043222/sujebelusirojaxanikalodok.pdfIn PDF document text
    • https://site-1039800.mozfiles.com/files/1039800/zewovufe.pdfIn PDF document text
    • https://site-1038658.mozfiles.com/files/1038658/43119028913.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/2acaa744-f600-44d9-af18-c103d7e46fec/80005754279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6767cfff-29d9-4c9d-87f9-21374fecf929/35083906751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69f6a793-3904-4c7b-8919-d28e7d138454/12288285181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c1d014c-7b7e-4c31-95cf-f0fa0aa4b159/tukenesefizugak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/180a044a-997b-4c19-bacb-c63f8f88fb8b/72946783375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973c667e-bae6-4933-a984-340ea15c2b58/29795143801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/227f87d1-e832-4264-881b-058a3bd77f74/wusilevilemigipag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcfeddba-dea7-49eb-8f63-87459ea687af/babotakabul.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_off000058ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CA 4952 bytes
SHA-256: 707a8e19f79cd97cef6bb413580bece250ff87bdddb4995d62556db28a79a569
font_01_sfnt_off000069b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 10456 bytes
SHA-256: eb3cd7d93274b8bf9d8051865c2ef16bcf13167f43b9283e5a13a2f8406a7794

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