Malicious PDF — malware analysis report

Static analysis result for SHA-256 9378103a2984a41d…

MALICIOUS

PDF

35.1 KB Created: 2020-09-06 19:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 018ac4aba12b9d2fb5e7d642bc6e3284 SHA-1: 7f19c1305c7ea270bd294347e259e59eeab8f0a4 SHA-256: 9378103a2984a41d79844667d7e6acc520370296aef7006ba2dbab6c402a231b
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a movie title, which is a common social engineering tactic to trick users into clicking. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this link points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting the malicious intent of redirecting users. No scripts were extracted from this sample.

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.me/wix?keyword=adhikar+1954+full+movie
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/sesuxiperidosipafodotiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/biriduk.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/rabulibitotenat.pdf
    • https://static.usrfiles.com/ugd/79e0dc_caad86602f144465ac9b09390f14c2dc.pdf
    • https://static.usrfiles.com/ugd/aa14a9_465793fc48484f1698d8279467333e04.pdf
    • https://static.usrfiles.com/ugd/191a6d_3ebc006b18ab49b688d40b8437afe0e5.pdf
    • https://static.usrfiles.com/ugd/64e449_c0beaa0e397a46238c1c0fbe7726f1f6.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/48276975314.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/50941675409.pdf
    • https://cdn.shopify.com/s/files/1/0430/9116/5333/files/95926242308.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/byron_bay_gig_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/bsf_constable_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/5176/9256/files/34194285899.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/66622320333.pdf
    • https://cdn.shopify.com/s/files/1/0434/1137/4234/files/bamerobedukuzurewe.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_off000049ce.bin
736343708f8bee86519b0f25412f1798b3fa1b329d4b821f64cf7d10382901ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49CE 5500 bytes
font_01_sfnt_off00005c71.bin
96da0ed8e9c98916c1aaf52aea3a8aa1880295a0a76ac643cccc36968fb391b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C71 10440 bytes

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