Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81c6da42c6efcee…

MALICIOUS

PDF

68.1 KB Created: 2020-08-12 10:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7118ed7938e2217c29d9a113f801401 SHA-1: 86e0bc4b6d383ddd8329bb6319cf9ffaf2a66318 SHA-256: e81c6da42c6efceed0562da81436ada0f383ebc5325710282b2078e296a0cb81
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to trick the user into clicking the malicious link, likely for phishing or malware delivery. The presence of numerous links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

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=afficheur+lcd+pdf
    • http://files.crystallineenergyhealing.com/uploads/1/3/0/7/130775228/464904e854015cd.pdf
    • http://nadunar.polishedspurtackco.com/uploads/1/3/0/7/130739275/rafeworis.pdf
    • http://files.journeyagtorrington.com/uploads/1/3/0/7/130740465/f22929bb1008.pdf
    • http://vefodo.pecanstreetchristianschool.org/uploads/1/3/1/4/131409090/029a2cbf.pdf
    • http://tesopeneb.nejoudalyagout.com/uploads/1/3/2/6/132695535/wirofejaragejok.pdf
    • https://cdn.shopify.com/s/files/1/0437/0307/4971/files/63237066715.pdf
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/jimorobumupewalazo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/84364885523.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/58397363596.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/64309196038.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/letozigopotopebufa.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/un_amor_de_invierno.pdf
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/35656108410.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7688/files/labeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/6471/2616/files/sipam.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/macmillan_check_your_aviation_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9783/files/wikupibupotogexusagajamat.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_off0000c28f.bin
d8fff7603b1d8ac5af089c9b01d72704e0b16378d9ac0641f26456ebee838e38
pdf-font-stream PDF embedded font (sfnt) at offset 0xC28F 4844 bytes
font_01_sfnt_off0000d2f7.bin
19460ed2277a4f97c8e18768a0ecc5e6bbc104bfe1f2e6388ae57bebea2cf400
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 15600 bytes