Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ec93a337f4aa82…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 22:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb8bc0e2b565108702680715e0d0376 SHA-1: 333380e21b3c470cee9fc1db4783dfe1d9f90ded SHA-256: d8ec93a337f4aa82ba3382343b14099ad0f26f2544fc9e8ffad1307e561be3f8
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, pointing to 'https://ttraff.cc/pify?keyword=app+store+apk++for+jio+phone'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading an application. The document also contains a large number of embedded links, many of which point to Shopify domains, likely as part of an SEO spam campaign to increase visibility. The primary malicious link is the most critical IOC.

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=app+store+apk++for+jio+phone
    • http://lexir.teamvpf.com/uploads/1/3/1/3/131383837/9d42609.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/forensic_anthropology_current_methods_and_practice_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/jimira.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/tajofadolejusil.pdf
    • https://cdn.shopify.com/s/files/1/0434/0409/9735/files/82614122680.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/neurological_assessment_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/33029052619.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/sans_tootsie_roll.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/jojuzipagekowukutofivuxet.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/aws-_certified-_solutions-_architect-_professional_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/texinikefebijumig.pdf
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/calculus_early_transcendentals_3rd_edition_briggs.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_off000058e9.bin
002739c9e535ee973991ac80717a099ca5639315fd1f5abf56d0b6563c3dd3bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E9 5088 bytes
font_01_sfnt_off00006a33.bin
27f4063a6d5b731b3b204b015462372d6ef49b502af6dff80e467601ac4fd2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A33 9708 bytes

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