Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2546dc0679cd9e…

MALICIOUS

PDF

39.9 KB Created: 2020-08-14 11:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 441c6137d8fbbed243cf81574cd62d5a SHA-1: 881ee4abf56cef488dfc04fb561c8944956002ea SHA-256: cc2546dc0679cd9e0946cf931376a50b079708207cd829d96ceb120ba2b3f6c5
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to direct users to a malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to 'Amped wireless rec10 setup guide'. The presence of numerous external PDF links, many hosted on Shopify, indicates a SEO-based distribution tactic. No scripts were extracted, but the primary malicious action is the redirection to a known malicious URL.

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=amped+wireless+rec10+setup+guide
    • http://files.makerteacher.net/uploads/1/3/1/4/131409761/nifokativubozuv-vugojubudunofes-sijuziledizu.pdf
    • http://files.stoneworkswellness.com/uploads/1/3/1/6/131606550/6cdd0.pdf
    • http://files.ghostinspectors.com/uploads/1/3/0/7/130775249/7430753.pdf
    • http://files.cck-iuc.org/uploads/1/3/2/6/132695575/fakivijan-dumusipuzavaxo-kojewuxim-lozib.pdf
    • http://files.openstarmaths.org/uploads/1/3/1/4/131406885/1175481.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/nesesizedukotibixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/kugitosesa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1219/2413/files/87620677123.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/old_age_pension_application_form_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/beauty_plus_apps_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/wezasarakitonemij.pdf
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/36214839097.pdf
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/calculus_1_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4101/files/zunivalidegowipitujigit.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/barrio_bravo_roberto_melendez.pdf
    • https://cdn.shopify.com/s/files/1/0439/3431/8760/files/nodebagadinazelilajibo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/fekulimokatutanaguj.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/70864900596.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_off00005b57.bin
0e515f01b9db099f4aea55ba8ab55793ee2c99fd248fc42393ad8b850cf34f72
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B57 5456 bytes
font_01_sfnt_off00006de6.bin
91ba4cebd67cd0c8fb2ef2e20edb1bf0250813027b386baeb3110b06a9cb1043
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE6 10840 bytes