Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b411849b1d9c96c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 19:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 923df7487f2668457d6fb2533ace6203 SHA-1: d3f408989e017cfc63ecb77bdd65a8291480986c SHA-256: 9b411849b1d9c96c7d97c29cefa1cf9f21acae457fd61d12a1ca2f22cec7c6db
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This link is presented within the document body, likely as a lure for users seeking 'Openoffice templates labels'. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=openoffice+templates+labels
    • http://files.downbeatmusiclab.com/uploads/1/3/1/3/131398392/1227e60.pdf
    • http://debufenu.mymacedoniamonroe.com/uploads/1/3/1/3/131383657/gabexas_radifojotabudar_nusew.pdf
    • http://nixap.canaryvilleriders.com/uploads/1/3/0/8/130874388/lixovemopam.pdf
    • http://files.decoupagecollective.com/uploads/1/3/2/6/132682106/mixaditodu_rewaribuxokawus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/18278061735.pdf
    • https://cdn.shopify.com/s/files/1/0438/1868/0482/files/bizakujonotukepubol.pdf
    • https://cdn.shopify.com/s/files/1/0433/3302/5960/files/44190335993.pdf
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/educating_all_students_exam.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/78425726502.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/an_occult_guide_to_the_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/bonizimopuvosisawanuxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/bacillus_subtilis_taxonomy.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/brisin_shortlisted_candidates.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/saguzanufazaxovip.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_off0000667e.bin
b1edf468c9d244111fb06b0db3558c474258ad13e0e313bc7b6712f730d9fa29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 5232 bytes
font_01_sfnt_off0000782d.bin
e87d0bb1650c9b1b47d131c177c2a745a6561807f9adda1adcc284876ba4d637		 pdf-font-stream PDF embedded font (sfnt) at offset 0x782D 9848 bytes

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