Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a76ea80aa92ed6…

MALICIOUS

PDF

52.9 KB Created: 2020-08-21 13:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c10deb9775ee276701a282b5e4de4b2b SHA-1: 6b6eff3dee30ae307572fa23d175d9ee6cfe12b7 SHA-256: a6a76ea80aa92ed69b6c89c90cb775dd96276e33c03a2c7d54ed6a43f9238709
128 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'commercial lease contract template philippines' and includes a mass of external PDF links, many hosted on Shopify. One critical heuristic indicates a PDF redirector link to 'https://ttraff.cc/pify?keyword=commercial+lease+contract+template+philippines', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains references to this URL and other PDF links, reinforcing the attack pattern. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • 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=commercial+lease+contract+template+philippines
    • http://files.flindersislandrunning.org/uploads/1/3/2/7/132740285/8215592.pdf
    • http://files.iodenewbrunswick.ca/uploads/1/3/0/7/130776517/xogijurujezumeli.pdf
    • http://files.thepottingshedcyprus.com/uploads/1/3/0/7/130776022/8385788.pdf
    • http://salesof.russellvanecek.com/uploads/1/3/0/7/130739430/pelotodozarekeda.pdf
    • http://kenilebij.artlynchactingcoach.com/uploads/1/3/1/6/131607163/8462312.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/refexizemotanebedonozafuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/vodev.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/hp_officejet_8600_driver.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2133/files/21136813626.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3239/files/yo_el_supremo_augusto_roa_bastos.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/tumete.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/52788275059.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/46264266857.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/neet_answer_key_2020_by_nta.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7428/files/28989322150.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_off00009218.bin
5b62bd5693972c9254e2b32f942536e06a885b2d3309027cb9122144a904dcea
pdf-font-stream PDF embedded font (sfnt) at offset 0x9218 5076 bytes
font_01_sfnt_off0000a320.bin
0feede442ee0f97e56bf6f64a52d2606f54f044713e91e3b4b7456f1f9960bda
pdf-font-stream PDF embedded font (sfnt) at offset 0xA320 10444 bytes