Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da2e0946386b25f…

MALICIOUS

PDF

45.7 KB Created: 2020-11-06 20:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 03974ccf4484aed3ae141da8f8902823 SHA-1: d9f119b652804f47c32b6fac4da61c6a53e606f4 SHA-256: 2da2e0946386b25fcdf59e002afc688cb4342e0adf67830d35672030d0735a0b
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are embedded within the document body and point to various PDF files, suggesting a link farm or SEO spam campaign. One of the primary URLs, 'https://traffset.ru/aws?keyword=2020+floral+calendar+printable+free+2019', is directly associated with the document's apparent theme and is flagged as suspicious. The ML classifier strongly indicates maliciousness, and the PDF structure with numerous external links aligns with techniques used for traffic redirection or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffset.ru/aws?keyword=2020+floral+calendar+printable+free+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426551/normal_5f97a9fce7f34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5fa05e9173ce3.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/6229bc3c-199f-4488-88eb-0f0d27d356a7/kia_niro_ev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/610d96be-7e10-4ab4-98e3-5d7f65071fe0/99418196671.pdfIn PDF document text
    • https://monirasuwa.files.wordpress.com/2020/11/gefelosukamipidorubiniz.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/foloda.pdfIn PDF document text
    • https://werojadiv.files.wordpress.com/2020/11/10113983697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f60e007-fcb9-4687-8e07-3bf1c74790ae/daguva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0084206-43dc-45c5-8741-86603569571d/60765192823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21165514-5d7b-4c1a-bc47-130d281b3671/kuwukebeguwowubopuraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d64a71-20de-4ac7-b4d2-13a3068e4d01/sezixuxibidonezenininite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993055dd-53a8-4bf2-ade3-31bb1aa32aa1/latoxikin.pdfIn PDF document text
    • https://zikivep.files.wordpress.com/2020/11/sapimovezekisoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc3a930-f16f-4afb-a48b-567e0bfb7ba8/life_seal_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0823f42-ff47-4bd6-965d-81473547cacb/pandas_scatter_plot_label_points.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d08bcc-d418-4127-b3d9-37da806e939e/34373440359.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/wazasusegupaxusijip.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_off0000748e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 5496 bytes
SHA-256: 2fd3f379174dfd21764978e4d705b71d92bb0e76ff3ec226ce25f81de95bb22b
font_01_sfnt_off00008745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8745 9928 bytes
SHA-256: 43365ea3656eebcd0c9951f8c85175f3526a9fc2da1a90b0ef42727a0b44930f

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