Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a58ebe00d570191…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 08:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b1c32ca151361adfb004042dd63d08d SHA-1: 2665ba05d2ed4102bd51dbab4d7f9e497de89379 SHA-256: 1a58ebe00d570191eac1a078f2e5953221e1492b3391895e33c52d98a20d6fad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'sample company letterhead word template'. This URL redirects to a malicious domain. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or to host further malicious content.

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.cc/pify?keyword=sample+company+letterhead+word+template
    • http://files.anjowholesale.com/uploads/1/3/1/1/131164398/vapeberom.pdf
    • http://figizo.easterpublicationsllc.org/uploads/1/3/2/6/132682137/depiponubofim_zojuduxuxu_fobubiru.pdf
    • http://daxip.meccacademy.org/uploads/1/3/1/4/131483200/xutitoximem.pdf
    • http://darifol.brainaneurysmavmcommunity.com/uploads/1/3/0/7/130776225/5f38fb54.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/forevupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/morning_evening_adhkar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/naxaminadatapemoxupuxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/acrobat_reader_and_editor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7295/files/karimuvinemabodisidokuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3041/3475/files/8307527856.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4103/files/74252503745.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/farorudotovesebuzu.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_off00006d9e.bin
53e4d16cc83c3a48c915f2043c05b0ca4689aff3260fa153c1676870077b3ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9E 5432 bytes
font_01_sfnt_off00007ff8.bin
cb0aceebbf73a471a30fef8a7d28f1ba5b12bd0f9d767f168bcba9a6c57dfea1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF8 9412 bytes

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