Malicious PDF — malware analysis report

Static analysis result for SHA-256 226c07e071c81eac…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 01:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9238595a11af0f6efb0e2411b58d624b SHA-1: bc93ab0657849634a57a6f3fceb142740fec64fe SHA-256: 226c07e071c81eac645f7d3385fa7e481f895172c40085f2d7dee9e68d99cf5d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The document body, though heavily corrupted, contains text that appears to be a lure for a 'Facebook for Nokia E63 new version' download. This lure likely directs users to the malicious URL found in the document, which is a redirector. The PDF also contains a heuristic for PDF_SEO_LINK_FARM, suggesting it's part of a larger network of linked PDFs.

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.com/pify?keyword=facebook+for+nokia+e63+new+version
    • http://denajelis.slateproject.org/uploads/1/3/1/3/131384429/182d89ba2d0f3.pdf
    • http://files.thrilltheworldaustraliamelb.com/uploads/1/3/1/8/131856276/xakowajuluxutomeve.pdf
    • https://d.facebo
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/8337319140.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5295/files/33493797036.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/bateralozero.pdf
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/internship_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/bhagavad_gita_chapter_14_slokas_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/permutation_and_combination_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/check_whether_homebrew_is_installed.pdf
    • https://cdn.shopify.com/s/files/1/0436/0467/2675/files/5_inch_binder_spine_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/5432/4117/files/lobekugewowameg.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_off0000605e.bin
7845b63a0e75592218fd8d49940c3247da3982372d88a82bcc79337b6942b734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 5472 bytes
font_01_sfnt_off00007328.bin
76ea4d3c362a2c34d44232b6c5947072f47130405602360ad493b93a999c7636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7328 10544 bytes

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