Malicious PDF — malware analysis report

Static analysis result for SHA-256 28745fba23e0a134…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 06:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ec0d9c5acc8a33ee317862e710d006 SHA-1: 06a1fa04baf7fc2b77e5634f6c3fc86d40ddc855 SHA-256: 28745fba23e0a1348aa3b26b199f9a2771d9240ea5bd319032cb23aad94cd5c1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is associated with malicious activity. Additionally, it features a large number of embedded links, many pointing to Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily corrupted, contains fragments of the URL and text related to 'carb nite diet reviews', indicating a lure to entice clicks on the malicious link. The primary intent appears to be redirecting the user to a malicious site.

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/wix?keyword=carb+nite+diet+reviews
    • https://cdn.shopify.com/s/files/1/0452/0129/3461/files/human_genetic_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/72105775152.pdf
    • https://cdn.shopify.com/s/files/1/0430/7432/2586/files/99597676555.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/11827004806.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/zokawolapinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/vowepijorobir.pdf
    • https://cdn.shopify.com/s/files/1/0449/4124/6619/files/ireland_eyewitness_travel_guides.pdf
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/datta_bhagavatam_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/xoropopatazirigela.pdf
    • https://cdn.shopify.com/s/files/1/0438/2529/9606/files/1440220943.pdf
    • https://cdn.shopify.com/s/files/1/0432/3265/7575/files/le_cid_corneille_acte_1_scene_6.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2323/files/vuvijumupedeberodapizadak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/65192291187.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/wepugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1353/0019/files/59700034616.pdf
    • https://cdn.shopify.com/s/files/1/0433/9082/8700/files/gartner_firewall_2019_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/kexebojixuxopigepapekuz.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_off00007c39.bin
4e0e95969c21cea1ae2b3951e50780158ab66aafc60cb1daa5a38332b6819330
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C39 4984 bytes
font_01_sfnt_off00008d48.bin
f7681531ccbe29be069811973a8394136634626ebc9594732bdc7e4e714c7766
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D48 10420 bytes