Malicious PDF — malware analysis report

Static analysis result for SHA-256 46468e46df1bdffc…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 07:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bbaf37e22bccfe19dc8e6717958d01e SHA-1: b66d20361eda5582609ce0c02dc7e86e640db7aa SHA-256: 46468e46df1bdffc16971894a7519830ab71ad41e87f03d51551f4aaf33f002e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate that this is likely a link farm designed to manipulate search engine results or redirect users to malicious content. No scripts were extracted from this sample, limiting further analysis of its behavior.

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.ru/pify?keyword=punctuation+test+pdf
    • http://files.gallery109.ca/uploads/1/3/0/9/130969987/7750431.pdf
    • http://wijubawo.loukief.com/uploads/1/3/1/4/131437604/tojazavixinuj.pdf
    • http://files.jeremymahood.com/uploads/1/3/1/8/131871658/9383569.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/48311158129.pdf
    • https://cdn.shopify.com/s/files/1/0443/3071/3244/files/bipolar_disorder_articles.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/48547490227.pdf
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/business_analyst_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/death_certificate_nz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/82190580226.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/waxabuwubuxubifis.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/42418515157.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071dc.bin
a7d1abd759fcff701bbea327fee544f0be2c1c4d76668e400151b06f8f053800
pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 5024 bytes
font_01_sfnt_off0000830e.bin
6f16f6a53f4f4d195d0d5da770355b4a83bbdec19d0b1d30542eb3a59c651dd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x830E 10192 bytes