Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8cadd0e5d495ff…

MALICIOUS

PDF

49.2 KB Created: 2020-08-13 22:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74e6bba9843120c0ea54e83db036d421 SHA-1: ea35382a191de3b1a3f10d983df3f4abadb39ce9 SHA-256: 9e8cadd0e5d495ff1b15ed807406832575b921f27b17fb1fccfdd1b2935068fe
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, a technique often used in link farms to manipulate search engine results or to distribute malicious content. One of the primary links, 'https://ttraff.cc/pify?keyword=javafx+8+css+reference+guide', is flagged as a malicious redirector. This suggests the document's purpose is to lure 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.cc/pify?keyword=javafx+8+css+reference+guide
    • http://files.gmfcf.org/uploads/1/3/1/4/131437139/815767.pdf
    • http://files.iypforum.org/uploads/1/3/0/7/130739450/riwukuxar-fopupukoxa-vosinu.pdf
    • http://files.cluesescaperoom.com/uploads/1/3/2/6/132696558/nimuratup.pdf
    • http://files.nordicwalkinglondon.com/uploads/1/3/1/4/131437806/zaguk-dimebefir-nivekurixiwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.pdf
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/91239638460.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/nuxivekeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/aluminium_hydroxide_davis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/biguzetisofovimizer.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/bugabiwajosuridobibepalag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/kuxomevad.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/shadowing_japanese_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/98210547077.pdf
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/big_java_early_objects_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3343/files/58238236857.pdf
    • https://cdn.shopify.com/s/files/1/0433/7002/1014/files/18386093212.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_off00007193.bin
be91bf43b1a21c9577c712b81859e54e9b6f4e84448c11b16d688103af66e732
pdf-font-stream PDF embedded font (sfnt) at offset 0x7193 5160 bytes
font_01_sfnt_off00008326.bin
17618eb700c13170be92892649d520644daf65482ee90ad36e898d3e867e4ee3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8326 11284 bytes
font_02_sfnt_off0000a9cc.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9CC 4324 bytes