Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b24ae5c18d84ec…

MALICIOUS

PDF

67.1 KB Created: 2020-08-09 00:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54556f18404faa40ba63e0b15fc19907 SHA-1: 13bed0e60e2b9835c63a4dc485515c4ad48487e8 SHA-256: d8b24ae5c18d84ec8f732f64f110f49278276b715d04d704a856408f20ac7e59
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=latest+discoveries+in+science+pdf', which is also flagged as malicious. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or to download further malware.

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.com/pify?keyword=latest+discoveries+in+science+pdf
    • http://files.haymakerlaw.com/uploads/1/3/1/4/131408169/buvekugedepoxe.pdf
    • http://files.stmichaelukrainiancatholicbaltimore.org/uploads/1/3/0/7/130740625/1954900.pdf
    • http://files.leapfrogmountain.com/uploads/1/3/1/6/131606875/sesun-pimivumi-nonob-mewis.pdf
    • http://files.post37.com/uploads/1/3/0/7/130775387/3343985.pdf
    • http://files.pickertfamilyfarm.com/uploads/1/3/1/0/131069887/fefutati.pdf
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/nigilole.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16949815227.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zitadeduwifugegumav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/62478483535.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/teserumotinanu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/34645726654.pdf
    • https://cdn.shopify.com/s/files/1/0431/3622/1351/files/sadavixobegufolafale.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/davodifilopofewovekutan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/ink_master_full_episodes_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/60316893025.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/osu_skin_pack.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_off0000bbf7.bin
16a477838857d95014634dfffff7baac41bad6450b4546a6b7c9924a877e11d4
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF7 4908 bytes
font_01_sfnt_off0000ccb1.bin
25f30402dd1732fea63382a5c64d249d55def7439de4c7481326dd878f16d663
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB1 10660 bytes
font_02_sfnt_off0000f118.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xF118 4324 bytes