Malicious PDF — malware analysis report

Static analysis result for SHA-256 9491e7eb6ade7f1b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 13:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05207cbf4c8a4247da779897b4846b8 SHA-1: fbdd88b9ddbf6847c1eaaba020a5a78d445c4f40 SHA-256: 9491e7eb6ade7f1b7230f74516cddc5b2e0ef73a5d92dd43b13e03bd92019020
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which are generated SEO-style slugs pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This indicates a link farm or redirection strategy to obscure the final malicious destination. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=environmental%20analysis%20tools%20pdf
    • http://sepaxawo.jamicaphotography.com/uploads/1/3/0/7/130775997/8195802.pdf
    • http://files.soxworldla.com/uploads/1/3/0/8/130815311/70af13770f36659.pdf
    • http://files.empoweredthroughchoice.com/uploads/1/3/1/4/131438137/nixikozisin-fiwesoxitepuva-manigepaf.pdf
    • http://zikibatum.art-camp.org/uploads/1/3/2/8/132814930/37ab3.pdf
    • http://files.mylifesaparody.com/uploads/1/3/0/7/130775978/telujut-lamadapube-zevene-kanitufiberusa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/gozotiruvigizuwoxetuxetaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/zofosowijasu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3624/files/risk_assessment_tools_techniques_and_their_applications.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/wuvebugefevaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/lord_byron_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/patrick_bateman_apartment.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/xegejekasudukalos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/budesufeto.pdf
    • https://cdn.shopify.com/s/files/1/0428/2014/1223/files/vexogiwetitakavot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/paralaturu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/40757394869.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/state_fips_codes_csv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/46038862916.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_off00006112.bin
515eb59d9481db1900849b7b7c51f7ad9c92142a23ae7a4ea9bb30c37a9fa797
pdf-font-stream PDF embedded font (sfnt) at offset 0x6112 5308 bytes
font_01_sfnt_off0000730d.bin
517b5aa0e865eab9166e95ca441095d6a0103f5f34d6fe418a8ec53e28dbbe00
pdf-font-stream PDF embedded font (sfnt) at offset 0x730D 10288 bytes