Malicious PDF — malware analysis report

Static analysis result for SHA-256 36667f5fdbc9193f…

MALICIOUS

PDF

81.8 KB Created: 2020-08-24 13:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ec682f822f9d405beaad1deb38af3b9 SHA-1: 02cbe28e9f1eeb31bf0d89ddd7327c8710d03334 SHA-256: 36667f5fdbc9193f22e92104f78652de1a77c29114a68e333758586d4b29824f
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'Federal reserve report 2018' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a malicious redirector indicates an attempt to lead the user to a secondary malicious site.

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.com/pify?keyword=federal+reserve+report+2018
    • http://files.krgabogados.com/uploads/1/3/1/4/131406960/sipewixitekifid-mivipi.pdf
    • http://files.meaningfulhealthhurunui.org/uploads/1/3/0/7/130775465/somivaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/familia_y_crisis_estrategias_de_afrontamiento.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/42630300820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.pdf
    • https://cdn.shopify.com/s/files/1/0448/4605/5586/files/metformin_hydrochloride_prolonged_release_tablets_ip_500mg.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/75786903586.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/43033277372.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/the_challenger_foraminifera.pdf
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/pdf_ausfllen_und_unterschreiben_android.pdf
    • https://cdn.shopify.com/s/files/1/0457/7922/2694/files/14200614171.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/wupilidilatog.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/bapatiretob.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/zulizawopuleto.pdf
    • https://cdn.shopify.com/s/files/1/0446/7025/5267/files/image_studio_lite.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb52.bin
2447d15d99e0070202dd25ce4647aa1c58b624331171035ffb27247002e34ed3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB52 5488 bytes
font_01_sfnt_off00010e17.bin
a9c432d11d3c62c3215d77af36b596dfaacc55f31c3bc120f37b3f5902cf9a45
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E17 13976 bytes