Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1783dc3e0cd7ad2…

MALICIOUS

PDF

33.9 KB Created: 2020-08-23 08:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90997f1719380b50ad0e0e4078fdc695 SHA-1: c9c7501416c2720c50e7aa4a8229ad386a88103f SHA-256: a1783dc3e0cd7ad2b469b0a568351701e27596589276cc1ea1edb7f1985ed897
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=informatica+developer+workflow+guide+10.+2.+1', is designed to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains but are likely part of a broader SEO poisoning or redirection scheme. No scripts were extracted from this sample.

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=informatica+developer+workflow+guide+10.+2.+1
    • http://pasox.kmsdrama.org/uploads/1/3/1/4/131452903/newexaruf-bamofadaw.pdf
    • http://files.craftychefs.co.uk/uploads/1/3/2/6/132681517/vumejatetap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9099/files/electrocardiograma_derivaciones.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/2319813027.pdf
    • https://cdn.shopify.com/s/files/1/0428/5523/5740/files/anestesia_local_y_general.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/53219393748.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89965927340.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/bontrager_trip_300.pdf
    • https://cdn.shopify.com/s/files/1/0439/0567/9528/files/the_bookseller_of_kabul_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/farm_theme_birthday_sheet_cake.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/benefits_of_internet_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/bitlocker_for_mac_os_x.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/campbell_biology_11th_edition_etextbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/madhav_gadgil_committee_report.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_off000047b0.bin
f85f08f07152bb42e560f9a0c1fee92e2faa9f49e17127a248c968897fdb7c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47B0 5808 bytes
font_01_sfnt_off00005b80.bin
93be9e55229587e0b46fb559f064596c091c6def0dcded658db465850dc4ae5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B80 9156 bytes

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