Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd58f220dfb96ed…

MALICIOUS

PDF

44.2 KB Created: 2020-08-21 13:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2e4c43d8e867cea7b45d49f28224f78 SHA-1: 7c89087ad87977200dcbfa3f16396d3467ba9a1a SHA-256: bdd58f220dfb96edf1590d205bd59ebcf60e8abe5c3bd2b2325c4070e92c8d7e
220 Risk Score

Malware Insights

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

The PDF document contains a link farm and a critical redirector link to 'ttraff.com', indicating a malicious redirection attempt. The document also exhibits characteristics of a password archive lure and a recovery secret request, suggesting a social engineering tactic to obtain sensitive information or facilitate further compromise. The embedded URLs, particularly the one pointing to 'ttraff.com', are the primary indicators of malicious intent, likely serving as a gateway to phishing or malware distribution 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=aws+codedeploy+cloudformation+template
    • http://files.cleggenglish.com/uploads/1/3/1/4/131406149/576757.pdf
    • http://files.jackiehelderdesigns.com/uploads/1/3/1/6/131607075/mabiwezija-netefal.pdf
    • http://files.mystarsandstripes.com/uploads/1/3/2/7/132740399/gugimirovomuk-fawilizifajuf-nejaviditaxina-rapezadato.pdf
    • http://files.chantaljean-pierre.com/uploads/1/3/1/4/131408798/3078321.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9069/files/unity_c_player_movement_script.pdf
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/bugs_bunny_barber_of_seville.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/85599153147.pdf
    • https://cdn.shopify.com/s/files/1/0438/3444/1885/files/suwejatoku.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7268/files/62638860782.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/givupu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/15510802396.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/nios_admission_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/4367/6582/files/18511986644.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/lududenox.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_off00006daa.bin
f8916db8f0f058f6a87b1dab539383c78aec7c9a0e5c02004efd064024440939
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAA 5484 bytes
font_01_sfnt_off00008049.bin
aa2a20a354628a4a8dde7ec24fd90f9acad7d5f2aac47d4036f8eaf05ff70c08
pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 10472 bytes