Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb61b6d1c786562…

MALICIOUS

PDF

55.1 KB Created: 2020-08-29 05:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f1e5ad354c7e80026abb185047e2363 SHA-1: ffa94b8e90a24528734e91aa7561d0e86bb18c52 SHA-256: ceb61b6d1c786562b8276ebfb06e0cdd3b136b8128d16719e51e8af089a6148a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, a PDF_SEO_LINK_FARM heuristic indicates a large number of external PDF links, many hosted on cdn.shopify.com, likely to obscure the malicious redirector. The primary malicious IOC is the redirector URL. 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.cc/wix?keyword=tere+liye+duniya+chod+di+hai+mp3+fre
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/the_arabian_nights_summary.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/ascii_table.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4906/files/apiculture_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/libro_de_absentismo_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/oracle_forms_java_license.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/sugunedizesoro.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/gilore.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9487/files/59060106250.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/zemug.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3351/files/27018670141.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/suramedo.pdf
    • https://static.usrfiles.com/ugd/b8c837_49773783d9b1483f950c79338b3366ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_1845900f8f6c4f749ea740a21fd36569.pdf
    • https://static.usrfiles.com/ugd/b8c837_1902b7e3d2804492a3faf56f5da7441f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa9edf5b06d34eaa87515a65ae1775fe.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006772.bin
c29d4970f922d57e59b10727155d14f5a24cd07760af498db375ae4a1da18519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6772 5432 bytes
font_01_sfnt_off000079bd.bin
e23e650d84d7c7f53599332b3b873cd7959e4ff05ec74b56e8da89a731827863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BD 4768 bytes
font_02_sfnt_off000086f2.bin
75d4260aa5b3cb0935e3679f83454fc09e75c49cf67b4e44b25a3d72f71a56b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 12392 bytes
font_03_sfnt_off0000af95.bin
213a6ab797dc35435dc408fc8c1cfa058450217142279b1e22f23a6708e491d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF95 16368 bytes
font_04_sfnt_off0000c550.bin
5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC550 1736 bytes

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