Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95b5a22f7e05d9b…

MALICIOUS

PDF

49.4 KB Created: 2020-08-15 06:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f6c9b5e85f2ff8629dc6f818a36ab0e SHA-1: e2a88594d90b3372d5db08c0b97123fd4fafe066 SHA-256: b95b5a22f7e05d9bc8d334a08358f13c5c118dd62d3baa9e06adfc312df265b9
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=bayern+fifa+20+best+formation'. This link is presented within the document body, suggesting a social engineering lure. Additionally, the file exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely for obfuscation or to appear legitimate. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=bayern+fifa+20+best+formation
    • http://files.shilohrealty.org/uploads/1/3/1/4/131408204/joxegatit-jukomewisukok-kilogegogokojek-sizamawoketig.pdf
    • http://files.themerchantsguildstore.com/uploads/1/3/1/4/131407493/98730559d3.pdf
    • http://files.elizabethpohlmannphotography.com/uploads/1/3/0/8/130813420/xazurobijetawo_napefijapu_dumelabe_dapazugofika.pdf
    • http://files.thebridgeinnathorton.co.uk/uploads/1/3/0/7/130776073/7002688.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131379612/lufuxofuwusuwufaposi.pdf
    • https://cdn.shopify.com/s/files/1/0449/9714/8830/files/58937472291.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/wuxenebesuk.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/penifi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/ragojobinapebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/zomafabikemomebitekiw.pdf
    • https://cdn.shopify.com/s/files/1/0454/2785/1422/files/medea_euripides_libro.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4533/files/tenidopukapa.pdf
    • https://cdn.shopify.com/s/files/1/0433/2791/4152/files/apicultura_sebrae.pdf
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/jimexivatozidizunaburuz.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_off0000764b.bin
97d9d0ef70b9cfc38eff3e03a78d00ab78ed9a3bc7374f58fdbedd5e445f6b43
pdf-font-stream PDF embedded font (sfnt) at offset 0x764B 5232 bytes
font_01_sfnt_off000087f9.bin
c2510aa5e0e1904f54d47ee68dad5e13d908e97cd3ce8b998bb6dcd8d6579a65
pdf-font-stream PDF embedded font (sfnt) at offset 0x87F9 10120 bytes
font_02_sfnt_off0000aa9a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA9A 4324 bytes