Malicious PDF — malware analysis report

Static analysis result for SHA-256 6121a84a3729f1c0…

MALICIOUS

PDF

40.2 KB Created: 2020-03-31 05:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e7af46ab0cc2d26546081b91634f4aaf SHA-1: e3bd0d408a1b6657aa12694ea055c765e968df9f SHA-256: 6121a84a3729f1c0a49d7c55c9d2844a06bde8c7b9a184354c060d636b3307a4
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files and HTML pages. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external link farm. The document body contains obfuscated text and URLs, suggesting an attempt to disguise its true purpose, likely to drive traffic to malicious or spam content.

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 http://mylevifamily.com/uploads/1/3/0/4/130488228/130488228.html#masa+molecular+de+so4
    • http://cae-tikao.com/uploads/1/3/0/5/130589400/sadejukojixoga.pdf
    • http://mkbdynamicventures.com/uploads/1/3/0/4/130489771/pisezifidomofatugem.pdf
    • http://civiceducation.ca/uploads/1/3/0/3/130313470/5127974.pdf
    • http://dvcomedy.com/uploads/1/3/0/5/130539922/7334372.pdf
    • http://hopefornela.com/uploads/1/3/0/7/130776001/229336.pdf
    • http://lifetimesmiles.dental/uploads/1/3/0/6/130620985/vinirijuwexebog_kepeb_vixamovuneraw.pdf
    • http://reconnectyouth.org/uploads/1/3/0/5/130589135/jigut.pdf
    • http://sstmgt.com/uploads/1/3/0/6/130639406/gobapokepuma.pdf
    • http://avalon-business-consulting.com/uploads/1/3/0/6/130620946/zunokaguxufo.pdf
    • http://havensofmanhattan.com/uploads/1/3/0/6/130620334/9904474.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000674a.bin
0ac9a73f8ab67acb90d26f399d45a0b0b2aa29b4ead22a87ff334a0a6c3ec66b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x674A 8204 bytes
font_01_sfnt_off000085a0.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 4144 bytes

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