Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbd790590973dbb…

MALICIOUS

PDF

40.3 KB Created: 2020-08-25 23:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feed62cba6462b5dd2c3efd51354fef1 SHA-1: 63cf9097b09d594f1f57005677ad74516da984d6 SHA-256: 2dbd790590973dbb9f9e4e8c2fa0c565a970cec79b205ac4c84e9ffea454dd26
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic identifying it as a PDF link farm. The primary malicious link points to a redirector, suggesting an attempt to lead users to potentially harmful content. The document body contains garbled text and a reference to 'conan exiles seeds', which appears to be a lure for the redirector. No scripts were extracted from this sample.

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.ru/pify?keyword=conan+exiles+seeds
    • http://files.cogopsop.org/uploads/1/3/1/3/131382395/6288408.pdf
    • http://files.sponsorforhire.com/uploads/1/3/0/9/130969305/sadanalonajefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6050/2421/files/blackberry_stv100-_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/sdfix_kitkat_writable_microsd.pdf
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/zowojulenomilub.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/sabadefotezeluzezaxuma.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/fegerodoloj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/53810313675.pdf
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/latest_bangalore_metro_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/16140929083.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xawifakupubegezixezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/94675676663.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/mipagofepavatajowov.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/bubble_text_app_for_android.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_off00006200.bin
5b6502dbc7f007d45f2687463f9cc7adcafc2ceec5783657633d4c6a09bc8dc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6200 4696 bytes
font_01_sfnt_off00007201.bin
625b36f8132bb89368d8cea754ee078bd3d68fdf75f82da736b54f1c10eb70b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7201 10128 bytes

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