Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef866c22776a3cd…

MALICIOUS

PDF

75.5 KB Created: 2020-08-06 05:12:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b130a288707ffa7e5d4faaa10d7f4e59 SHA-1: fabcfa50ebc2593d4e248c3efcb38b6837e63efb SHA-256: aef866c22776a3cd02085d75170b700fb02d9442d4638179e8a64530d752b020
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=basis+cranii+adalah+pdf', leads to known malicious infrastructure. The PDF also contains a large number of external links, characteristic of a link farm, further indicating malicious intent. The ML classifier strongly supports the malicious verdict.

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=basis+cranii+adalah+pdf
    • http://files.riversideanimalclinicmi.com/uploads/1/3/1/0/131070378/lufemukel.pdf
    • http://files.sarahreed.ca/uploads/1/3/1/4/131436956/9469490.pdf
    • http://files.anglesborons.com/uploads/1/3/0/7/130738943/zugupufukusebudemowa.pdf
    • http://duwudojod.heavyhittersftjackson.org/uploads/1/3/1/4/131407705/zavifadanuberiwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/pathfinder_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/9414/6200/files/rinilesifinanejujadi.pdf
    • https://cdn.shopify.com/s/files/1/0451/2507/5109/files/conduction_equation.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/8736083880.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/vibavuvinokeku.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/48512244304.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/jelakatogejukuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/puxufadono.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/burekit.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/iso_3166_1_alpha_3.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/bopisexuforujijonediwupa.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_off0000e80d.bin
1189bbe597a200fdb208f83121d1ffc91339c7aee2f37cdde7d7087ba3014c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80D 5292 bytes
font_01_sfnt_off0000fa06.bin
521a44b453d6beaa1485a57158be9312dc9bb0426427ea08c15f43bcb94d38ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA06 12072 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.