Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3e3f35623dc713…

MALICIOUS

PDF

41.0 KB Created: 2020-08-02 10:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45e719c0c43667534077b2b235397f41 SHA-1: aad34d18b5dd412b6f41c1870cdc8d0c4ada49cf SHA-256: 3d3e3f35623dc713873328f8914fa9805ad1d6a07f2f0f20bdd9411de9ce5d99
160 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a lure to a potentially harmful site. The heuristic 'SE_PAYMENT_REDIRECT_LURE' suggests the content is designed to trick users into believing it's related to financial information, such as bank routing numbers. The primary malicious URL is https://ttraff.cc/pify?keyword=tcfbank+routing+number, which is likely used to redirect the user to a phishing or malware distribution 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.cc/pify?keyword=tcfbank+routing+number
    • http://files.sunwardtours.com/uploads/1/3/0/8/130874055/0563a.pdf
    • http://files.thecontainerfactory.com/uploads/1/3/1/4/131406337/490a526f4e.pdf
    • http://files.thewanderingbays.com/uploads/1/3/1/0/131070112/rukavijeb_biziwet_buxaninumef.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/56788481553.pdf
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/rivefikogevibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdf
    • https://cdn.shopify.com/s/files/1/0430/4312/7447/files/relapeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/24889285525.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/gozedepuwipedizus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9384/files/google_e7_bf_bb_e8_ad_af.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/41718099783.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/divudemevurutopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/85571356861.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/41848163191.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/fiderezebut.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/40893718894.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_off00006063.bin
8b644897c06b798b87afa9355f8803d1931863f2d20a4efb6fd3ebb3ee7737e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6063 5144 bytes
font_01_sfnt_off000071e2.bin
918a5f3f9cedf76d689dd1e80658ee5c8948e0507fbe3656477ece39cd0450a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 12072 bytes