Malicious PDF — malware analysis report

Static analysis result for SHA-256 58758f213e3f491f…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 09:30:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45ce80669469b68b588653d21951f65b SHA-1: 1a8de9f428c29ad90d0ed87e5f6a2b75f0acd33d SHA-256: 58758f213e3f491fdc91190d9e5856f25d7e4f29b8d120f3a0fad945d97a0343
120 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with a primary malicious redirector URL embedded in the document body. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.com/pify?keyword=comment+r%25C3%25A9unir+plusieurs+pdf+en+un+seul+avec+adobe+reader leads to known malicious infrastructure. The document body text, though partially corrupted, also contains this URL and appears to be a lure for users seeking to merge PDF files.

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=comment+r%25C3%25A9unir+plusieurs+pdf+en+un+seul+avec+adobe+reader
    • http://files.sustainableartschool.org/uploads/1/3/1/0/131070485/2332046.pdf
    • http://files.pandalyllc.com/uploads/1/3/1/4/131408172/bogetisijubaso.pdf
    • http://files.boutsandbows.com/uploads/1/3/0/8/130874431/ccdf1131aa7.pdf
    • http://files.goldeninnervision.com/uploads/1/3/1/3/131398052/8017279.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/kobalt_40v_string_trimmer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/busutes.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/kazezape.pdf
    • https://cdn.shopify.com/s/files/1/0431/3805/6354/files/19033644259.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/58066020278.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/dirumisawudogore.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/zip_code_cape_coral_fl.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nitupalakisotubawu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/lujugifilubizinilagisa.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/16305390845.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/71573032440.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/84017954917.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/77192129601.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/savopenijuwumilidogijop.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_off00005da7.bin
39e223b649dcb31d4f96439c6e898174ed1148901b0e8cd5302c59e80d04cc7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 5548 bytes
font_01_sfnt_off00007027.bin
ae631a44e76cf87f0eb947591a1fb3c6c5d7341e2a63155d55b78f924d99eeed
pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 11600 bytes