Malicious PDF — malware analysis report

Static analysis result for SHA-256 50bc591121ccba46…

MALICIOUS

PDF

55.5 KB Created: 2020-08-22 22:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485f42a4ea4014468b0317ab181365f4 SHA-1: 934638c7387ef6221cd632b174e972d7ab39f6da SHA-256: 50bc591121ccba46075a96683c162fea15f1211b8dc1bcc1421036cb2c6f11ed
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.cc/pify?keyword=angular+formbuilder+disabled'. This suggests the document is part of a link farm or SEO manipulation scheme, likely intended to drive traffic to malicious content or to obscure the true destination of the malicious links. The presence of numerous links and the identified malicious redirector strongly indicate a malicious intent, though the exact payload is not directly executed by this PDF.

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=angular+formbuilder+disabled
    • http://xikilo.hunterwrestling.com/uploads/1/3/2/7/132740930/zatanap.pdf
    • http://files.troyfoundation.org/uploads/1/3/1/4/131453267/donax.pdf
    • http://files.johnjzelenski.com/uploads/1/3/2/7/132740580/mutejexadapuxodan.pdf
    • http://dijupo.preciouscollective.com/uploads/1/3/1/1/131164250/motegena_poxajaj_wubeladapolelup.pdf
    • http://pivovu.gordonstounartandphotography.com/uploads/1/3/0/7/130738948/mowazeworat.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/darejurajufovotebeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/sudodominikisovas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/42802222887.pdf
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/57658229883.pdf
    • https://cdn.shopify.com/s/files/1/0440/6509/5845/files/9118731539.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2325/files/77239808576.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/heap_implementation_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/rexekivukunemi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/contrastive_analysis_james.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/prova_de_auditor_fiscal.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/mitavijuxodorunigup.pdf
    • https://cdn.shopify.com/s/files/1/0434/4083/2678/files/75504075826.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007140.bin
3cb42b572d49e026c1b609537016ec25a2b60eb3a2cd0e8c857f99deb6bb5f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7140 5356 bytes
font_01_sfnt_off00008356.bin
82f2f513f1609d88471d7e2805e55c29bb7c0a3e474cf3bb86a7a6eec27b620e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8356 2108 bytes
font_02_sfnt_off00008cfd.bin
efe18729d27014abd8d7a5d4bee2bebd2bfc5365e638d9d4af532b85489b7454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFD 13708 bytes
font_03_sfnt_off0000b910.bin
4b5c7613666b158bb9c1cbc28f0d3af4d3fe2526b699abea9ef56a4c5171584f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB910 16840 bytes

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