Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94f9e81230029ce…

MALICIOUS

PDF

44.9 KB Created: 2020-07-30 14:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8543eb906f0bb132384d8166e5b6169e SHA-1: c143ba8e298c9a22cd7418c09f7fcdb523b58650 SHA-256: b94f9e81230029ce8f0f7b7cda32f67532cede101f28bbf0e303fe3b8c388e74
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a 'PDF SEO Link Farm' heuristic. One of these links, https://ttraff.com/pify?keyword=sp3+sp2+and+sp+hybridization+pdf, points to a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it is a PDF related to chemical hybridization, likely a lure to disguise the malicious intent of redirecting users to harmful sites.

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=sp3+sp2+and+sp+hybridization+pdf
    • http://files.lachivphfellowship.com/uploads/1/3/0/8/130874369/dalagamule.pdf
    • http://files.everythingisanevent.com/uploads/1/3/0/8/130874058/wedazulesolo.pdf
    • http://files.hubbellbros.com/uploads/1/3/1/4/131453256/zuzavuwat_banim_naxepe_japirafibo.pdf
    • http://files.watersideminers.com/uploads/1/3/1/1/131163788/nelexiwid.pdf
    • http://files.watersideminers.com/uploads/1/3/1/1/13116
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/50388065787.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/95387310921.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/vakapaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4399/files/linobewejawimipuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/sevutaxewikidupenikudakof.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/ruwiwokujeposanufifivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/55706529784.pdf
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/wosuxiwudafojoxixus.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/71032733629.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.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_off00007254.bin
9bf21011b3f8ec8eef94701d72083eca7b99bf547a50083b30c9b974ef08ab0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7254 5456 bytes
font_01_sfnt_off000084bf.bin
0c9d7d35c6a3361144c2f1905217065dde228a13b4b45f8d7d6cd9f8901349ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BF 10000 bytes

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