Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee443414f1fcd26e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-07 21:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8bf5a227ce562172ba4da61683e3729 SHA-1: 3720185d0e90320077beaa45b5e6b31139285e66 SHA-256: ee443414f1fcd26eea33b020812549da51ffde69218a5112baab64914a3ad69d
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to malicious infrastructure at `ttraff.cc`. The document body text, though garbled, includes a lure related to "verbal and nonverbal communication pdf free download" and the malicious URL. This indicates the PDF is designed to trick users into clicking malicious links, likely leading to further compromise.

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.cc/pify?keyword=verbal+and+nonverbal+communication+pdf+free+download
    • http://files.mitemplosagrado.com/uploads/1/3/1/3/131379815/nipeliridasi.pdf
    • http://files.oma-cob.org/uploads/1/3/0/7/130739601/c2ca220e52.pdf
    • http://doxupipef.littleevaroseandco.com/uploads/1/3/1/6/131637814/a5cfc2c26ba1.pdf
    • http://tipesi.vickilake.com/uploads/1/3/1/8/131871674/bajobuwefaboj-dadobememis-setuzajikuki.pdf
    • http://files.brunswickbands.org/uploads/1/3/0/7/130776089/tixapuderidulapala.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4344/files/vumexakov.pdf
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/84935170194.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69696378660.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/muslim_baby_girl_names_with_meaning_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/bizipal.pdf
    • https://cdn.shopify.com/s/files/1/0433/2617/7438/files/los_proximos_30_aos_alvaro_gonzalez_alorda.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/90295808971.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/lejisasorovupesozewovena.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9009713252.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/zodawisogejisub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/gallantry_awards_2020_list.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_off00007856.bin
f8060bc986d2e000c430d21562fddbc43f211f36ba6b001078e20e46f3ee17c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 5380 bytes
font_01_sfnt_off00008aa2.bin
7558a8ba1580fe12da8c669d35758981829f4888176150a47ae5bc67ee67d8ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA2 10408 bytes

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