Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c5f878d2ff8a50…

MALICIOUS

PDF

43.2 KB Created: 2020-08-18 18:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7721f793aa84e65d0b959afa4f52c042 SHA-1: c26fde6841eb0df3856397fce7f19e1550afb296 SHA-256: 89c5f878d2ff8a507783cdf0f78811d57f29d936224cceef14fe764b568f94cd
136 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body and heuristics suggest a lure, presenting itself as a business lease agreement template to entice users to click the malicious link. The presence of a link farm further indicates a malicious intent to distribute further payloads or lead users to malicious sites.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=sample+business+lease+agreement+template
    • http://vawomeb.pinckneyplayers.com/uploads/1/3/1/4/131436977/56123a852.pdf
    • http://files.bressefarms.com/uploads/1/3/0/7/130776589/7ed8f6d91ad00b0.pdf
    • http://files.eranthelaw.com/uploads/1/3/0/8/130873992/suwunojopimop-vitilomawumarat-toxovava.pdf
    • http://sugojirum.rottensocks.com/uploads/1/3/1/3/131379410/4099551.pdf
    • http://zumit.cyclingforsight.org/uploads/1/3/1/6/131606027/0a995bfb.pdf
    • https://cdn.shopify.com/s/files/1/0433/2178/6521/files/sorivogutoxokiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9122/files/duplicate_wordpress_page.pdf
    • https://cdn.shopify.com/s/files/1/0431/2655/4781/files/dakibababelofijewibojake.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/resoluo_castellan_fisico_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/zevesevuluboresukano.pdf
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/15310300522.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/anpadh_hari_video_hd.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/915948256.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/fovid.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/71390755243.pdf
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/casting_defects_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0438/9247/4011/files/lerenonagojaraw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1093/files/vazewifipuvabebugere.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/84426952628.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_off00006b09.bin
7cfe91452541c92d8108296ae32192eb782eab76725ef03d3335af74f2b62b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B09 5384 bytes
font_01_sfnt_off00007d39.bin
2696f735779cd17618add5dd03559b132808233479338232e7435074f3e131d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D39 10120 bytes

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