Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1d6a5d6c60e8d9…

MALICIOUS

PDF

36.6 KB Created: 2020-04-21 04:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 243f037452ec872c02423b04113a977a SHA-1: 9215b85968f2a9a94b9acf188a250226b46e4916 SHA-256: 2a1d6a5d6c60e8d9609adf4e39fb67fa3f9d2ba447c7d9964eb608c1e65c1f73
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The document body, though partially corrupted, contains text related to 'Centrelink logon report' and references the wkhtmltopdf tool, indicating a potential lure for credential harvesting. The ML_NYX_PDF_MALICIOUS heuristic strongly supports the malicious classification.

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://ertravelnurse.com/uploads/1/3/1/1/131164324/131164324.html#centrelink+logon+report
    • http://mishkinphoto.com/uploads/1/3/0/2/130270761/1b45d08559c64e3.pdf
    • http://gsudeltachi.org/uploads/1/3/0/6/130639608/tizabibixopewatezero.pdf
    • http://cdgray4.org/uploads/1/3/0/9/130969066/28c8d34c5072.pdf
    • http://repentir.me/uploads/1/3/1/3/131379525/327496d887cf8bd.pdf
    • http://elisafox.com/uploads/1/3/1/3/131378921/6737479.pdf
    • http://beasthardcoreathletics.net/uploads/1/3/0/3/130312972/5eab8925df6.pdf
    • http://memoriesofasickkid.com/uploads/1/3/1/3/131397942/2721966.pdf
    • http://innercitypropertymangement.com/uploads/1/3/0/7/130776776/2593332.pdf
    • http://mmconstruction.eu/uploads/1/3/0/7/130739431/juxul.pdf
    • http://cannapetmedz.net/uploads/1/3/0/7/130740374/8812548.pdf
    • http://millerscupcakery.com/uploads/1/3/1/4/131411762/1536542.pdf
    • http://link3technologies.net/uploads/1/3/1/4/131482886/197b88fa54.pdf
    • http://buckbeehomestead.com/uploads/1/3/1/3/131382320/7114473.pdf
    • http://caricaturesbysimon.com/uploads/1/3/0/3/130312968/leriw.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000685b.bin
509f7a1fd2c7d816f05658bb356b529951f4a3883f4cb7bd9a0c7b3dfa0bfb23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685B 7256 bytes

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