Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fed452f6d938c0e…

MALICIOUS

PDF

46.4 KB Created: 2020-08-02 05:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e10aeef5be9b2f384fe1ff589dfad69 SHA-1: 40ac17e9bca2a783e065f01f5c4fe7aa3d2f2950 SHA-256: 1fed452f6d938c0eca29cb8be6b9f3be7a86536e56a80424f3d48bd5e7d77c7a
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=bright+house+networks+channel+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body also contains the lure text 'Bright house networks channel guide', suggesting a social engineering pretext. The primary attack vector appears to be directing the user to malicious infrastructure via the embedded link.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=bright+house+networks+channel+guide
    • http://files.dnacrobatics.com/uploads/1/3/2/6/132683014/gafanebuborog_bipumulinapuga.pdf
    • http://files.oasischurchaiken.com/uploads/1/3/1/4/131437949/woxolodifavo.pdf
    • http://files.sftint.com/uploads/1/3/0/7/130775893/f9d2c614b1f.pdf
    • http://files.edcardproject.org/uploads/1/3/0/7/130775729/jopolunizaxabin.pdf
    • https://cdn.shopify.com/s/files/1/0436/9563/6633/files/59990384600.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/99939461842.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/lawilevujuvularijoruxen.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/sukuboviwenudamudev.pdf
    • https://cdn.shopify.com/s/files/1/0430/5800/4117/files/41533533008.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/27106531958.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/murokofupapofedeluxiwa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/lufulejiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/74090139958.pdf
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/padipibusakurozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/98399134505.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/florida_cdl_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4172/files/wedamale.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f6.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F6 6744 bytes
font_01_sfnt_off000074db.bin
e241adbf1438e80d7aa71c19e008128b8c28dc5488a10b1d354b0d2f95501e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DB 5408 bytes
font_02_sfnt_off00008751.bin
ab48f8dc623bd2e7fbd8d6db543ff067f3a7f8fb232fdfb5e0ebe27c1e57e43b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 10660 bytes

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