Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac6cc7466405bcf2…

MALICIOUS

PDF

39.5 KB Created: 2020-08-30 01:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76aece9d33ec515aa20c11c6492b9b11 SHA-1: d0a4ac4d921967a1b2d1ed223cade18a7988193b SHA-256: ac6cc7466405bcf224c641a92788c3a68bfb87bab2554b895e306f26621ab962
140 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with numerous links hosted on 'cdn.shopify.com'. The document body also contains text related to 'Tomodachi life qr code' and the malicious URL, suggesting a lure to trick users into scanning a QR code or clicking the link. The presence of a QR code lure heuristic further supports this. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=tomodachi+life+qr+code
    • https://cdn.shopify.com/s/files/1/0434/8051/4713/files/72450969462.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/24k_magic_flac.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3669/files/amman_tamil_bakthi_padal_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/2305/5523/files/economic_effects_of_migration.pdf
    • https://static.usrfiles.com/ugd/cdb50c_196cb21a518643159eb386f8d32931c3.pdf
    • https://cdn.shopify.com/s/files/1/0462/0075/0233/files/sepavowemenuwarevosisarov.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/android_tv_stock_rom.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/singular_plural_nouns_worksheet.pdf
    • https://static.usrfiles.com/ugd/64d889_651d52b7af5944e0a9e24e12a4270ae7.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7828048057040e9b529c254bdcd7fb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ca6f42af8504f15a09752679f7346c2.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_off00005db3.bin
a7cefee64919b2af1f8d09602059c03f0176edcd312dd0ca0970b7b0a5a12998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB3 5156 bytes
font_01_sfnt_off00006f17.bin
1876ebf660c4c91bed4c6fbdd593ecc7379f0706c92864523d59db53d820a092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F17 10204 bytes

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