Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5cf62e42e3b9853…

MALICIOUS

PDF

53.7 KB Created: 2020-08-17 01:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88a620a0b8aa7ed737455c9849dd7113 SHA-1: 7d9e6b4848903977f40698566778e57cd69b108f SHA-256: f5cf62e42e3b9853dea1054046cec0f62e61ce02a82383efdcc0657bcb14ebc8
168 Risk Score

Malware Insights

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

The PDF contains a lure related to 'My aadhaar card by aadhar number' and includes a critical heuristic firing for a malicious redirector link to 'https://ttraff.cc/pify?keyword=my+aadhaar+card+by+aadhar+number'. Additionally, it exhibits a PDF SEO link farm heuristic, with numerous links pointing to Shopify domains, one of which is identified as a potential entry point. The document body also contains the malicious URL and benign-looking PDF filenames, suggesting a phishing attempt to harvest credentials or redirect users to malicious sites.

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=my+aadhaar+card+by+aadhar+number
    • http://files.honkrenaissance.net/uploads/1/3/1/0/131070520/3578f9490c503.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/55523636811.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/wibaturevazepamadomudun.pdf
    • https://cdn.shopify.com/s/files/1/0447/9657/5904/files/esl_advanced_reading_activities.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0437/1841/0394/files/caida_de_tension_formula.pdf
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/animal_habitat_worksheets_for_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/somiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4855/files/picture_description_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/principles_of_pediatric_nursing.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/15422892056.pdf
    • https://cdn.shopify.com/s/files/1/0448/0276/9053/files/chief_architect_sample_plans.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/poxubuxuworulopanuvore.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.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_off00009440.bin
322b2cc278a4c11653d5fc3c0f5f0b2b4ff709239d6b1ab89c828d9ec667fc73
pdf-font-stream PDF embedded font (sfnt) at offset 0x9440 5216 bytes
font_01_sfnt_off0000a5cd.bin
35a89e42533b4634aff48da49f77254eac55bcc3cd5bee4f76ea5e97242dc689
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CD 10468 bytes