Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f317ce18dd2d0e…

MALICIOUS

PDF

38.7 KB Created: 2020-09-10 00:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b4de59338021e8c8d944c64454872ca SHA-1: f270cce51732bf2ddb41f2c145312c08d83bb3cb SHA-256: b8f317ce18dd2d0e2aa90881a2e813eec147dd04403c08c76cb36b8484492c12
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=developer+console+salesforce+pdf'. This indicates a social engineering attempt to trick users into visiting a malicious site. The document also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farms used to boost search engine rankings for malicious content. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

Heuristics 3

  • 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.
  • 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.club/wix?keyword=developer+console+salesforce+pdf
    • http://files.sdedesigns.com/uploads/1/3/1/1/131163687/vudoz.pdf
    • http://files.thisorthatkids.com/uploads/1/3/0/8/130874633/d117eff4f37.pdf
    • http://files.academyofhirudotherapy.org/uploads/1/3/1/3/131379040/34780cc3971ea.pdf
    • http://files.nsupracticum2017.com/uploads/1/3/1/3/131384127/rugitalov-vutemifasigo-lasadekoleri-susevivo.pdf
    • https://cdn.shopify.com/s/files/1/0462/3853/1738/files/smash_mouth_all_star_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2931/files/windows_10_activator_keygen.pdf
    • https://cdn.shopify.com/s/files/1/0436/4166/7734/files/atar_notes_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/luvutipom.pdf
    • https://cdn.shopify.com/s/files/1/0436/2171/2034/files/finanaxu.pdf
    • https://static.usrfiles.com/ugd/bb13a2_1a25f014a4844fcab024f1729ecb45f6.pdf
    • https://static.usrfiles.com/ugd/ed2d23_cbad7842683f4b78a4c109ae5b2a3f20.pdf
    • https://static.usrfiles.com/ugd/3e5db3_61631d97ffe642c3a0f828f6c33f9100.pdf
    • https://static.usrfiles.com/ugd/5ad03d_2df4746227384f51b87004401eb31d4b.pdf
    • https://static.usrfiles.com/ugd/a4e402_9967514ab0b847f78821fd74fb51a3c8.pdf
    • https://cdn.shopify.com/s/files/1/0464/0587/7915/files/realtek_high_def_audio_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0464/1056/3752/files/school_complaint_letter_template_uk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6231/3639/files/gomunapitabejixixakotuze.pdf
    • https://cdn.shopify.com/s/files/1/0459/5531/7919/files/maulwurfkuchen_rezept_dr._oetker_bac.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_off00005cfa.bin
163308a4474c4b342b436279b8ec7aef903e8c4fc185f39eebabcbe3171b4005
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFA 5208 bytes
font_01_sfnt_off00006ed0.bin
5109dae01a55883f9e6b0abdb2398507a52d7d544b150a503cba5281864b6041
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED0 9132 bytes