Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1bddcfe16ce07d…

MALICIOUS

PDF

55.3 KB Created: 2020-08-29 19:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6651818994a817b9cb292a433eaf9d48 SHA-1: 330cfd950e240a84961d87be731d114f0d905d75 SHA-256: ca1bddcfe16ce07d2256fa8967f005b071a522d2160fd61b028a646f7b796a2c
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=broadline+chat+prix'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains fragments that suggest a lure related to 'broadline chat prix'. The primary attack pattern involves redirecting the user to a malicious site, likely for phishing or further malware delivery.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=broadline+chat+prix
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/12692698302.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/friends_season_1_script_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4853/2128/files/80788881718.pdf
    • https://static.usrfiles.com/ugd/b8c837_a97515deabf44a8f893645208f2536d5.pdf
    • https://static.usrfiles.com/ugd/63d3ad_6bee71851d34441baf2fa9c269efa9a4.pdf
    • https://static.usrfiles.com/ugd/9e41f0_0b6423b60165423a803f1f7a6ebd662c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec46b9046ca94cfe850ab314226bdc4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d22b7b1c7ebd4c4f93e4430c7519d839.pdf
    • https://static.usrfiles.com/ugd/77941b_806a482f88e2422fb90bbb305b259a78.pdf
    • https://static.usrfiles.com/ugd/b8c837_47cfeca3f1c243eda5b29a7c532e31b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0fd6ca95ad748b29772bbf24b52a278.pdf
    • https://static.usrfiles.com/ugd/5b5da7_565b3587a23641a4b7a83d5910353527.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2298079133140999817f0eb7840f75a.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/incest_porn_subreddit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/davumitifere.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/comptia_a_study_guide_barnes_and_noble.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008792.bin
db5d380d982b0ec1d6fb12c7a26e09ee536da740972a1069845f76d3fd75175e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8792 5100 bytes
font_01_sfnt_off000098e4.bin
ae0d28539a3b1dff0e8a6bff9f0640c45ee4fcc9e2adc1f90885ee435aae3a34
pdf-font-stream PDF embedded font (sfnt) at offset 0x98E4 10124 bytes
font_02_sfnt_off0000bb2c.bin
d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2C 16060 bytes