Malicious PDF — malware analysis report

Static analysis result for SHA-256 a069b55a069a6b19…

MALICIOUS

PDF

41.8 KB Created: 2020-07-15 01:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d6015ff49f6441c13e67034797d324c SHA-1: 4ac987888cd1b18b8e53e6feac51f96028e1c1e1 SHA-256: a069b55a069a6b190e5064c7619824ad8ae0081799065e2227204673ee0bab93
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=the%20winky%20wonky%20donkey%20pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to external PDF files, suggesting an attempt to manipulate search engine results or distribute content through a large network of sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wb?keyword=the%20winky%20wonky%20donkey%20pdf
    • http://files.valencialawyer.com/uploads/1/3/0/7/130739510/botixisozi.pdf
    • http://files.simonesoernsen.com/uploads/1/3/1/3/131383514/c9d5b8fa8.pdf
    • http://files.grantbomberbarker.com/uploads/1/3/0/8/130814535/wifilubab.pdf
    • http://files.fpblair.com/uploads/1/3/2/6/132695465/vilitufepedi-zeruwuzudamij-kufadaja-muxonosiwasovu.pdf
    • https://ximuzasonuzi.files.wordpress.com/2020/07/xibopuzatub.pdf
    • https://satipukaza.files.wordpress.com/2020/07/solazolawebexafoku.pdf
    • https://sotetusuveti.files.wordpress.com/2020/06/57425033462.pdf
    • https://xalokivufom.files.wordpress.com/2020/07/43934461478.pdf
    • https://nisawutuvava.files.wordpress.com/2020/06/turegatoxepob.pdf
    • https://taxevuvax.files.wordpress.com/2020/07/gufonoxeso.pdf
    • https://paxiboboguni.files.wordpress.com/2020/06/xovibarulujubitokigog.pdf
    • https://lavesuv.files.wordpress.com/2020/06/rogefesagugodojepu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/gerafofubup.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/zumefivijupaveziduxirader.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/menagalok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/44064320653.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/90435990044.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/
    • https://sotetusuveti.files.wordpress.com/2020/06/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006178.bin
cd900638384c54362a13fe5e984bdac1a2421f9939bdb5bbb93e7b0a146f09fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 4528 bytes
font_01_sfnt_off000070e0.bin
4205d1d4243567305b25f7fb3d8d360f6d038cb6b043d5b8f716e62d1e918605
pdf-font-stream PDF embedded font (sfnt) at offset 0x70E0 14368 bytes