Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcf6dbf625ea22c…

MALICIOUS

PDF

47.6 KB Created: 2020-08-13 23:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4618355b1f5569a34b990988381c67e2 SHA-1: ed64d8df72a6bba3b7d3cf3c2d97ea2771ad6114 SHA-256: 4fcf6dbf625ea22cb6380b9b4f8c30a0a6b3b4792e2227b19308750b091d69b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded links, one of which points to a known malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, specifically mentioning 'Aflac claim form accidental injury'. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to distribute further malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=aflac+claim+form+accidental+injury
    • http://files.ayrshirebowlingassociation.com/uploads/1/3/0/8/130814225/7c8146f3686.pdf
    • http://files.besedin.org/uploads/1/3/2/8/132814680/mamovuwowibufulituze.pdf
    • http://files.sinisterbjj.com/uploads/1/3/1/3/131380934/9742104.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/capturing_the_devil_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/38293014377.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/allegro_pcb_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9409/files/buposotafasuxabululoxewi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/86164935466.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mabiwabupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/opencl_programming_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5402/files/aneurisma_de_aorta_toracica.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/xupatililagugareg.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/92741546775.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/biosynthesis_of_flavonoids.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/heterogeneous_catalysis_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/ikigai_book_free_download.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_off00006e21.bin
29b5d1ae4372d6d752bc94d404f85062eabb170ccfc8f78e566f8de3010b56b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E21 5040 bytes
font_01_sfnt_off00007f2a.bin
0d2d9004fb77402aa494e0c396dafa5e2f683bd4ac7d10ab816d294dcf6ee2af
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2A 10484 bytes
font_02_sfnt_off0000a2fc.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2FC 4324 bytes