Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb2f4267b6c971a…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 19:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6e4667d1fb94f86818d5b7dd2710eae SHA-1: bb6303637f22146b31c18003fdd991cf74528257 SHA-256: ebb2f4267b6c971a63c9e7cc86046b13ef6550c2773dcbfe68a39d11d5d2a199
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body and heuristics indicate a lure related to online conversion tools, directing users to a known malicious redirector. The presence of numerous external links, many pointing to Shopify, suggests a link farm designed to obscure the final malicious destination.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=online+converter+to+pdf+to+jpg
    • http://files.beautifullybrokenhearts.com/uploads/1/3/1/4/131437977/2d89ec82f0.pdf
    • http://jarek.albanelved.org/uploads/1/3/1/6/131606255/43da00.pdf
    • http://files.sobremesasmag.org/uploads/1/3/0/9/130969772/zujegupi-derabo-golufinelepat.pdf
    • http://ropab.crankinblackbox.com/uploads/1/3/0/8/130814328/2746b44f7a56.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/24673290207.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4402/files/vewebirexefos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/46925200762.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/1998_ashrae_refrigeration_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0462/4442/9984/files/al_quran_rumi.pdf
    • https://cdn.shopify.com/s/files/1/0447/8612/2901/files/estrus_synchronization_protocols_in_dairy_cattle.pdf
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/wimuduwiwutolomekemi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2054/files/security_risk_assessment_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0434/3254/2369/files/wolomenudenefimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/77033122490.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/2170675036.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.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_off00006ae2.bin
9c47036a3da9f17fe1dff5a34ba9c0b67db199d1d5008f65c9ab685aa551b7ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 5096 bytes
font_01_sfnt_off00007c5c.bin
ef2e1954a3035a0946e896bd7ce92055f25162b40689e98d667b7e0e950d097d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 10120 bytes