Malicious PDF — malware analysis report

Static analysis result for SHA-256 9471136f90b97779…

MALICIOUS

PDF

39.5 KB Created: 2020-08-17 00:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb5cf21b7321e07e8d17d7478b2c35c3 SHA-1: f55c6dd9f38b76b2e76ce25b48a83f99d6e75de7 SHA-256: 9471136f90b977793d7bd3cf148c82a150392995f8d669fae908546b78957cea
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to malicious infrastructure, masquerading as a Bayer AG annual report. The PDF also contains a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of a call-to-action button further supports a phishing or social engineering lure. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bayer+ag+annual+report+2014
    • http://sotakug.stephaniedesigns.net/uploads/1/3/1/1/131163599/73c84c7.pdf
    • http://files.tinkscience.com/uploads/1/3/2/8/132815123/pigonemezotos.pdf
    • http://somel.mikimappin.com/uploads/1/3/1/4/131454165/48a31ef1.pdf
    • http://files.graysondel.com/uploads/1/3/1/0/131069879/kurowo-juzevesodi-lopisubabefemax-bodomixusezol.pdf
    • https://cdn.shopify.com/s/files/1/0433/2034/4731/files/48188272390.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/98217767675.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/rigavugatediz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/rekefajutelevozotewitazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/mamumubukasasirenagotufu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/14074177186.pdf
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/4297374621.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_off00005008.bin
8c6a4be7221746edbe041e70389a11213b4eafa7e473b09a3a8b51c8b24625e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5008 5208 bytes
font_01_sfnt_off000061db.bin
01ba0859c7fd392bf3ac3ae3564e5f54c0966871a633b77c051eeeec119bf2e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 9852 bytes
font_02_sfnt_off00008389.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8389 4324 bytes

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