Malicious PDF — malware analysis report

Static analysis result for SHA-256 8714be00bfc74a84…

MALICIOUS

PDF

34.8 KB Created: 2020-06-06 02:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1dd9c07fab7c4e848efb7eeeb3c87040 SHA-1: 197074a257dca0d9f061b368434f9ef1f02a34fe SHA-256: 8714be00bfc74a84d06f017e23eb1bbd8d3b2149d80889470f8d0417006c8017
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. The embedded URLs suggest a link farm or a method to distribute further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://randazzopainting.com/uploads/1/3/0/9/130969891/130969891.html#caravan+specialist+5e
    • http://timetravelerstrading.com/uploads/1/3/0/8/130874369/jurisajusipuzufaj.pdf
    • http://denisewalther.com/uploads/1/3/0/6/130620909/3439765.pdf
    • http://stjamesbands.com/uploads/1/3/1/8/131856257/87041e.pdf
    • http://randazzopainting.com/uploads/1/3/0/9/130969891/terms.html
    • http://randazzopainting.com/uploads/1/3/0/9/130969891/dmca.html
    • http://randazzopainting.com/uploads/1/3/0/9/130969891/policy.html
    • https://zawapoja.files.wordpress.com/2020/06/61795871371.pdf
    • https://tetakorure.files.wordpress.com/2020/06/2190057171.pdf
    • https://fazabido466330623.files.wordpress.com/2020/06/65911522440.pdf
    • https://jeposukaza.files.wordpress.com/2020/06/mirojemiguwas.pdf
    • https://lowisesuret.files.wordpress.com/2020/06/11744420814.pdf
    • https://depizawadi33663686.files.wordpress.com/2020/06/27151303561.pdf
    • https://nimewukomedi.files.wordpress.com/2020/06/68153023683.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_off00005d34.bin
7437a5592d8bf851fde73c32e32e77122e635701463ce35f3f6f30a9194f9c68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D34 10304 bytes

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