Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d761f7e4bee5985…

MALICIOUS

PDF

40.0 KB Created: 2020-07-24 08:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a90e8bfe9ba7d72029ee30ca4d35b17 SHA-1: 9466e2138f8166ded23ed7e5b3b9865323dbe140 SHA-256: 1d761f7e4bee598585ebdff842f07c6e9161f867431aa61b0dcb6f1641a02104
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically flagging it as a malicious redirector. The document body, though heavily obfuscated, suggests a 'catalog' lure. The primary malicious IOC is the ttraff.com redirector URL, which is likely used to funnel victims to further malicious content or phishing pages.

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=catalogo+avon+online+pdf
    • http://files.actorbritthalaas.com/uploads/1/3/2/7/132710665/3871983.pdf
    • http://files.sherrychaples.com/uploads/1/3/1/3/131398533/dunisi.pdf
    • http://files.solomonlaboratory.com/uploads/1/3/1/0/131070867/nafajizuvi-famoku-vuditipo.pdf
    • http://files.aultmanorthopaedics.com/uploads/1/3/1/0/131071114/f238817443a9e.pdf
    • http://files.taxesrussxm.com/uploads/1/3/1/4/131437523/5f73349ac139.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/lumasopivugitevid.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/1410120689.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/wumorudesifikedipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/lozusod.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/20859352472.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/7762752648.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/zunenatibebubodovowekebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/87520097124.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/51010555311.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/vawalexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/rukuzigitefaf.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/
    • https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607c.bin
999c253bb03a8094f0907d55f7fc6a8f38ca8ba1914efb61e0b8d96a53dbc99d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 4804 bytes
font_01_sfnt_off000070fa.bin
09ef0120c93568a98a283ac8099de0cfbad6159db11b22f0d88674e80f9dc940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FA 10000 bytes

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