Malicious PDF — malware analysis report

Static analysis result for SHA-256 486f3fc9f6100512…

MALICIOUS

PDF

42.7 KB Created: 2020-06-12 07:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eafd245310d88971ca0638b5fdb6f4fb SHA-1: c86083e4cf6daa4e17d74d31b98099c5a67a5285 SHA-256: 486f3fc9f6100512f8496b064cf2be30b64b1471945f53c40bcfd08ad0e02009
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text that appears to be a title and references to 'wkhtmltopdf', suggesting it was generated by a tool. The primary attack pattern involves directing users to a network of suspicious URLs, likely for hosting further malicious content or phishing attempts. No scripts were extracted from this sample.

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://mta-sts.mail.hellianmarine.com/uploads/1/3/1/4/131437671/131437671.html#exprimidor+manual+de+granadas
    • http://circle-m-consulting-llc.com/uploads/1/3/0/8/130813558/jewezagu.pdf
    • http://natsin-ent.com/uploads/1/3/0/3/130324234/5031455.pdf
    • http://lashandalewismusic.com/uploads/1/3/0/7/130775145/jadetidovegazirevu.pdf
    • http://gammonsgames.com/uploads/1/3/1/4/131413148/tanuluja.pdf
    • http://wilmingtonladiesteawalk.org/uploads/1/3/0/3/130379315/bisobidep.pdf
    • http://dhandsls.com/uploads/1/3/2/3/132302984/xopajabawafozowaze.pdf
    • http://stauntonpersonalstyling.com/uploads/1/3/0/6/130621533/8405786.pdf
    • http://katherinemcilree.com/uploads/1/3/0/6/130621212/49617bc758ea.pdf
    • http://mail.edorifertig.com/uploads/1/3/0/6/130620275/984d19cb4.pdf
    • https://bafevojol.files.wordpress.com/2020/06/vigajepubutupe.pdf
    • https://pozugupikuza.files.wordpress.com/2020/06/rijolew.pdf
    • https://ronoretexupo.files.wordpress.com/2020/06/66739899911.pdf
    • https://wejaxan901614801.files.wordpress.com/2020/06/gowagefub.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_off00007a07.bin
a1131796ab7804e2b175f72dddf7d57662823b653b2cb8e955ef3bd50937ef4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A07 11628 bytes

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