Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee8f860552dd4a6…

MALICIOUS

PDF

45.7 KB Created: 2020-08-09 20:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 912fd1584c3da11ad0eedd30b0dbc776 SHA-1: e4cf1c7d89f5ae6c6f8b7680100a3729e4873cdf SHA-256: 9ee8f860552dd4a65f331fbca8fdb1e16f0143a6a8bbad525cd51078dd6301b3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=radical+candor+by+kim+scott+pdf', which is also listed as a critical finding. This suggests the primary purpose is to redirect users to malicious content.

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=radical+candor+by+kim+scott+pdf
    • http://files.estatecomputers.net/uploads/1/3/0/9/130969448/2281393.pdf
    • http://files.muchzeal.com/uploads/1/3/0/7/130776037/buxajege-zajeti-nesisotew-vemopefuwaxiz.pdf
    • http://files.jsarchiveconsultancy.com/uploads/1/3/0/8/130814245/xemuzisisojise.pdf
    • http://files.cassowaryday.org/uploads/1/3/1/4/131453022/fawuxuxabos_tudekapomuv.pdf
    • http://files.polarmininginc.com/uploads/1/3/1/0/131070718/9994496.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/bouteloua_curtipendula.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/sololearn_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/5192102186.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/internet_addiction_symptoms_evaluation_and_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/36607209582.pdf
    • https://cdn.shopify.com/s/files/1/0439/2468/4955/files/data_mining_darshan.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/kenmore_refrigerator_model_106_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5360/5273/files/xogadateb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/53832114767.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/numinekewudodoweda.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/ginobu.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_off00007489.bin
20d0e3622fcf829d4a94d50073ebc0c5466f13adbbfdb0c9c89c2d357563b74a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7489 5616 bytes
font_01_sfnt_off0000879c.bin
9329c7f39f1d5ae3003b8c92ce5e5cfb6bd65bd4c1e830622877b583a94b3eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879C 9968 bytes

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