Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd0ebae70c2e1bb…

MALICIOUS

PDF

61.3 KB Created: 2020-08-05 10:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030f4b96be7d6bf34235fc898d78db1f SHA-1: 594b25a1e056baa766025fc464d828536e600869 SHA-256: 4fd0ebae70c2e1bb340762689755d1fd57a76a600e7b678e288df8995ce590ba
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=network+topology+project+pdf'. This indicates the document is designed to lure users to malicious infrastructure. The PDF also contains a mass external link farm, further supporting a malicious intent. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence for a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=network+topology+project+pdf
    • http://files.lgordoncraftsupply.com/uploads/1/3/1/4/131437676/773191.pdf
    • http://files.bubakes.co.uk/uploads/1/3/1/6/131637889/puwiw-pakizopimo-dawewavufenot-favif.pdf
    • http://files.wolverinelacrosseclub.com/uploads/1/3/2/7/132712369/207951.pdf
    • http://files.thewesgroupllc.com/uploads/1/3/1/4/131411539/fizifulajeremi_kosob_mejav_tepata.pdf
    • https://cdn.shopify.com/s/files/1/0440/7800/6437/files/90663655779.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/4795581672.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/57414330801.pdf
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/being_in_balance_wayne_dyer.pdf
    • https://cdn.shopify.com/s/files/1/0432/9567/0427/files/63490231401.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/dajesefezaduvijiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/71318615575.pdf
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/57693971419.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9283/files/76493005941.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/catalogo_tecfil.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/python_caesar_cipher_decoder.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_off0000b1e8.bin
cf17122c889b79a1bbc2dd7b5d660e7404856111dba1bfe5a914dfdb00cfbbc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1E8 5236 bytes
font_01_sfnt_off0000c3f6.bin
9c90e15f49372861aec301927a2311a987b217ececa958244bd356082bdce7f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F6 10772 bytes

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