Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a0c141cd3aebc0…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 09:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6145ea433385ed983ee0973b18ee5867 SHA-1: 4b49bb4e54a59125085088eee81dc08294337f0e SHA-256: c9a0c141cd3aebc0788fdb4be07a1271771f8d9e59dcf0cacd00420e0ff15101
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is an 'equipment criticality assessment template' and includes the malicious URL. This indicates a phishing attempt to lure users to a malicious site.

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=equipment+criticality+assessment+template
    • http://files.gregpatmore.actor/uploads/1/3/1/4/131438474/9277904.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/xepulonevagipurenonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/28191012548.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/international_convention_on_ballast_water_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/4234/8949/files/90165774830.pdf
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/sakodof.pdf
    • https://cdn.shopify.com/s/files/1/0446/6864/9625/files/halmahera_barat_dalam_angka_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0949/9548/files/atomic_structure_notes_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/chivalry_medieval_warfare_free_utorrent.pdf
    • https://cdn.shopify.com/s/files/1/0437/4999/8743/files/53967006162.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_off00005f86.bin
1de6f7f8a687395b802f235b7fdf72c3cd2e7e2f7d289b9e9eed996b0de49ba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F86 5036 bytes
font_01_sfnt_off00007093.bin
24aa8556de2650d27b56e11ee8867206912347f0cdfe5fefd0c26741c8f71940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7093 10884 bytes
font_02_sfnt_off00009590.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9590 4324 bytes

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