Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd616d18451f03be…

MALICIOUS

PDF

56.7 KB Created: 2020-08-06 04:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fa82b22955a0a92a905d6cf4eb096a1 SHA-1: 67be18945a62feb0ee04acfeaa2cff41b7367dcf SHA-256: cd616d18451f03becae16d87684f47e54105cdf8456d4465f8a8b4748501afe6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are hosted on Shopify and appear to be part of an SEO link farm. One of the primary links redirects to a known malicious redirector at 'ttraff.ru'. This indicates the document's purpose is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.ru/pify?keyword=australian+aboriginal+religion+pdf
    • http://files.legacy-318.com/uploads/1/3/1/3/131398324/kaziwu_xupunidadudibo.pdf
    • http://files.vesselartsco.com/uploads/1/3/1/3/131381204/5698121.pdf
    • http://files.jugglingforjustice.org/uploads/1/3/1/4/131483440/d311f811bb407.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/rigunurugekuromokufal.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/kisubigasona.pdf
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/66793194612.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2261/files/viwisuposunilujoxinaxanap.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/munixo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/core_critical_thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/starbucks_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/gejejiwiwaromuwogomajaxof.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/luvedutebomufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/6052128510.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/lil_wayne_carter_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/jisalomonowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jerozex.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_off0000a123.bin
a8beacdcd4f6a2398619c2ac5e5736eb6c506b649f627898cbb436c7a15c7b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA123 5336 bytes
font_01_sfnt_off0000b352.bin
f212fd903fe991f2b87cea5948c323edb893f85ac98d02d552cbf9da4f3ddeb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB352 10260 bytes

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