Malicious PDF — malware analysis report

Static analysis result for SHA-256 419ce3a80b29a5a3…

MALICIOUS

PDF

85.1 KB Created: 2020-04-21 21:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 477cda9f10cc3c7c0d1282904adb0f9e SHA-1: 1c890cb619e7dcffcb7e37d9a139f566da6f5de5 SHA-256: 419ce3a80b29a5a3fb838d79e636a874c72957136de8f82c9603f338d75e34cb
62 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, embedding a large number of external URLs pointing to other PDF documents. The primary heuristic indicates a mass external PDF link farm, with the dominant host being 'kleimierke.be'. The document body contains garbled text but includes references to 'wkhtmltopdf', suggesting it was generated by this tool. The intent appears to be SEO manipulation or directing users to a large collection of potentially malicious or spam content hosted across numerous domains.

Heuristics 3

  • 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
  • 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://murraywhiteley.com/uploads/1/3/0/5/130539120/130539120.html#partido+nacional+socialista+aleman+pdf
    • http://kleimierke.be/uploads/1/3/0/5/130539584/f24eb61.pdf
    • http://wwwabelmcelroy.com/uploads/1/3/0/8/130814731/9431889.pdf
    • http://lobodourado.com/uploads/1/3/1/4/131454950/2984892.pdf
    • http://elpproduction.com/uploads/1/3/0/7/130776393/6577399.pdf
    • http://karennovy.org/uploads/1/3/1/1/131164266/dekututidinezeb.pdf
    • http://snapchathoes.shop/uploads/1/3/0/3/130323109/sabarax-xopexa.pdf
    • http://gcgsun.ca/uploads/1/3/0/7/130738716/lowep_kenogetitanada_fiwigujege_jepew.pdf
    • http://rmbmed.com/uploads/1/3/1/4/131437919/sudovexenexabuj.pdf
    • http://ramoslandandcattle.com/uploads/1/3/0/2/130292143/34722a133dd0.pdf
    • http://fornowonjoyfield.com/uploads/1/3/0/7/130776891/1527737.pdf
    • http://bjm062318.com/uploads/1/3/0/6/130640025/cbe17adda3.pdf
    • http://thenetaportergroupdna.com/uploads/1/3/0/5/130550859/554259.pdf
    • http://handymanservices.info/uploads/1/3/0/5/130550698/xebadenevufux.pdf
    • http://cosmoboy.net/uploads/1/3/1/0/131070202/1754580.pdf
    • http://tistamporoma.com/uploads/1/3/0/6/130639400/8533773.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101c7.bin
b3cac85f23cf85636445df39f21cc46e674e797f5e5014b6970e92255650e97f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101C7 10920 bytes
font_01_sfnt_off00012731.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12731 2652 bytes
font_02_sfnt_off00013097.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13097 16036 bytes

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