Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7ddbb1fedc770a…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 23:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 634174e6b147d074352731184efdb3cc SHA-1: f89ef11bfe85c7c97d367d5268b4e04f8f71a89c SHA-256: 4e7ddbb1fedc770ac977a11ff2100773f6c1daff839abdb0fed9c6ba73560d5d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=badminton+rules+and+regulations+pdf+2017'. Another critical heuristic identifies this as a PDF SEO link farm, with 17 external PDF links. The document body text, though heavily obfuscated, contains a reference to the same malicious URL. This suggests the primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

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=badminton+rules+and+regulations+pdf+2017
    • http://files.pathedcollab.org/uploads/1/3/0/7/130776089/xosolifadiwujep.pdf
    • http://files.abtc2018.com/uploads/1/3/1/3/131398479/ridin.pdf
    • http://files.merrifieldseminar.com/uploads/1/3/2/7/132710655/7749287.pdf
    • http://pefonob.tanoramaofconcord.com/uploads/1/3/1/4/131438079/4722148.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/edital_prf_2020_em.pdf
    • https://cdn.shopify.com/s/files/1/0462/3263/3495/files/cerner_powerchart_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/76317856476.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41841620016.pdf
    • https://cdn.shopify.com/s/files/1/0433/7264/2454/files/zeteluzukiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/62739488477.pdf
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/nukidilazazerebejutuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/bodenawajodivitiri.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/capitalismo_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0432/3039/6574/files/69746793656.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/hotstar_apk_free_new_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/9547/3822/files/sample_invoice_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/aleksandr_dugin.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_off0000628b.bin
3a450cabe4d6f5588e5409aba3140d57d6e56e8369f5c3df5454f7f047a46c55
pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5816 bytes
font_01_sfnt_off0000764d.bin
d6a963b42cced204e239a9fe65c9e8a3f7b256769df1a39963c7d76e92bc4010
pdf-font-stream PDF embedded font (sfnt) at offset 0x764D 9576 bytes