Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d2139d4bbe1b8e…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 00:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f5f7ecad1eee09fc60994187ea5d373 SHA-1: 452429cdc3cb690a34a304160866deb572bf67b7 SHA-256: 93d2139d4bbe1b8ed3dc41191e2a529b48db6394ec1dbc69bc4f650798476872
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This service is known to host malicious content. The document body, though heavily obfuscated, contains the URL that triggers the redirect. The primary attack pattern involves luring the user to click on a link that appears to be a benign PDF, but instead leads to malicious infrastructure.

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.cc/pify?keyword=aura+soma+libro+pdf
    • http://files.fdnholisticwellness.com/uploads/1/3/1/4/131412181/81f35aca4d0d9.pdf
    • http://wegikuzo.serenepierce.com/uploads/1/3/2/6/132695569/1206786.pdf
    • http://files.n2d.shop/uploads/1/3/2/3/132303374/51c43.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/world_break_season_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/8073660592.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/fuxisewopukewugapurugiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/96625958065.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6117/files/40199732819.pdf
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/sitotakotifomedu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/english_textbook_9th_class.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1824/files/40884860187.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pifafesilepobusofamut.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/9002386282.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_off00005c10.bin
4b0043db39eeb55d8838e94a4f572c2957eb567448c112e1fbba90b10279f46c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C10 5316 bytes
font_01_sfnt_off00006e02.bin
382e738cd2e6e9dd87fce6c75997c67f9f24c85f59a7fe222b0026366e4909c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E02 10664 bytes

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