Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c7fa5565e58c89…

MALICIOUS

PDF

54.6 KB Created: 2020-08-09 01:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92726d28922f243ca2be83197701467d SHA-1: 7a71b3bc1b47da5b08ee006d8318730b2ca9f675 SHA-256: 96c7fa5565e58c89f2b9e87a4ef4ec68e02ac0d6883ef847f475b8fb3c0262a5
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text suggesting a lure for a PDF download, and the primary malicious URL is a redirector designed to send users to further malicious content. The presence of numerous Shopify links suggests an attempt to blend in with legitimate content while distributing malicious URLs.

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=changes+an+anthology+of+short+stories+pdf+download
    • http://files.guillome.nl/uploads/1/3/2/6/132696512/472ae.pdf
    • http://files.heritagesdachurchnyc.org/uploads/1/3/0/7/130776483/wejozaxufatapin.pdf
    • http://files.goldenseniors.info/uploads/1/3/1/3/131384025/zipujajovuj-wizexiwerut-tiriwilebug-kofude.pdf
    • http://files.gabrielsadzewicz.com/uploads/1/3/0/8/130874244/jozonejaxukabu.pdf
    • http://files.ldavismunro.com/uploads/1/3/2/6/132681749/2462561.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/57161822063.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/zojiwudetoto.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/13854933553.pdf
    • https://cdn.shopify.com/s/files/1/0439/4038/0840/files/94277591050.pdf
    • https://cdn.shopify.com/s/files/1/0437/2407/9254/files/panosonic_fax_machines.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/brooklyn_public_library_card_application.pdf
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/muvezatenezekafamu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0439/9982/1982/files/acute_coronary_syndrome_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/70935493870.pdf
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/hr_administrative_assistant_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/wolixe.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/mathematical_reasoning_questions_and_answers_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000970f.bin
1109c8bddc629b92a21372296e47e2dc25e0928fb57f7ae5e90de01cdd8bd755
pdf-font-stream PDF embedded font (sfnt) at offset 0x970F 5404 bytes
font_01_sfnt_off0000a981.bin
394452b27cfe1d8aaa969789225eb6368a65efba6f75cf56faf22c63b73bd21e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA981 10524 bytes