Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a17166a48f136e5…

MALICIOUS

PDF

39.4 KB Created: 2020-08-15 19:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e4337a7f7da5c95d892e79195bd094f SHA-1: 3a0d400646388bdf4f4f15353634f4c56725ed19 SHA-256: 7a17166a48f136e534fc60064c1adf8ad1d01c013421da7ae4d80d415cc93cd2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though malformed, suggests a lure related to a 'Mahanagar gas new connection form'. The presence of a link farm and MFA lure heuristics indicates a phishing or credential harvesting attempt. The primary malicious URL identified is https://ttraff.ru/wb?keyword=mahanagar%20gas%20new%20connection%20form%20pdf.

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=mahanagar%20gas%20new%20connection%20form%20pdf
    • http://wexusus.johnsastrophotos.com/uploads/1/3/1/6/131606490/lirexapodo.pdf
    • http://files.survivinglifechallenges.com/uploads/1/3/2/3/132303286/7404501.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/10514557695.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/xfinity_tv_remote_app.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/86835532365.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/99983548079.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/89222494477.pdf
    • https://cdn.shopify.com/s/files/1/0450/7323/6131/files/beninca_brainy_24.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/milerigudupegejaxagox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7614883084.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/gobiba.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/binika.pdf
    • https://cdn.shopify.com/s/files/1/0440/6840/5413/files/jisijanulupi.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_off00005b2a.bin
f94c76b3745fb903cb4fd13db4f63f0414aeb3787f90fcea99e22cf97dc4ffb7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2A 5632 bytes
font_01_sfnt_off00006e3b.bin
978cf76b60bc55299d670f6b363000418068c6a24a69b4dd1b47144c8b3a629b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10148 bytes