Malicious PDF — malware analysis report

Static analysis result for SHA-256 3463ce171e3f0874…

MALICIOUS

PDF

39.4 KB Created: 2020-09-08 01:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fcd21431242c9e007bd0e0de5db56f9 SHA-1: d5e741cad8964ba466f42f88bcaf8628bf63cbfa SHA-256: 3463ce171e3f0874b605fb637b29cac1899e671b74688c1cd88877a396769a2c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to shopify.com domains, likely as part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.me/wix?keyword=full+form+of+iso+file+format'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, potentially for phishing or malware distribution.

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.me/wix?keyword=full+form+of+iso+file+format
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/beautiful_wallpaper_flowers_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/16741968193.pdf
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/off_balance_sheet_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/4399/5298/files/battle_of_bloodmarch_hill_review.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/clasificacion_de_los_huesos.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/33579247421.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/anbe_peranbu_songs_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://static.usrfiles.com/ugd/49488e_4412f4f55e1a499bada57e8bd7ad7e6b.pdf
    • https://static.usrfiles.com/ugd/f515ca_522761e0aa2044f8aba9b9c3d8c9df22.pdf
    • https://static.usrfiles.com/ugd/87a178_d4cbec14cf544095addc178fb77b4a6a.pdf
    • https://cdn.shopify.com/s/files/1/0438/2998/5430/files/34362287109.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4950/files/free_template_html5.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/88587062320.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_off00005d6a.bin
3c750a7c0d58515ecb995c63a56836d254d6e4b6e9db2596c6164596136a8ca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6A 4868 bytes
font_01_sfnt_off00006dde.bin
7f3979fa7c0c674973294c284592470e03881f447b63e29f3258dee8498fa311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 10312 bytes

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