Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed3332f0b34626f…

MALICIOUS

PDF

41.2 KB Created: 2020-09-06 18:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48fee738f30e70a5a56bbdd9cff17dd8 SHA-1: 9ba19b552a80c155b15d3ce969d4b373d3096761 SHA-256: 2ed3332f0b34626fa49f370e9535990baf85de4fdc0ab7585b11e0080c99de2c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to educational worksheets. The primary attack vector appears to be directing users to malicious infrastructure via these links, potentially for phishing or malware delivery. No scripts were extracted, limiting the analysis of further execution stages.

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.link/pify?keyword=solving+inequalities+worksheet+with+answers+pdf
    • https://cdn.shopify.com/s/files/1/0437/3155/0362/files/number_line_1-_100.pdf
    • https://cdn.shopify.com/s/files/1/0433/7097/1299/files/kikipimuniveforexose.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/vekoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/24217235597.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/wells_fargo_bank_statement_sample.pdf
    • https://static.usrfiles.com/ugd/02beb7_3b32dce59779462f99fee23cda71f766.pdf
    • https://static.usrfiles.com/ugd/4b874d_de736307fc61468cbb63d6045d411987.pdf
    • https://static.usrfiles.com/ugd/6cf804_f7ff23d461f44ad3890493e2291ffd34.pdf
    • https://cdn.shopify.com/s/files/1/0462/4374/1845/files/weight_watchers_food_points_guide_list.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/losefemoxubemowipajuforo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/tirebigasawaj.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_off0000573f.bin
6a0a48f281bb8bea04204d94805fd3bf67bd2b39a16c2a883b1bd7bb69bc6b9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x573F 5748 bytes
font_01_sfnt_off00006adb.bin
9a4bb65c909f8961cbf64d6f100cdb12bd9498ab49d878ac6449fe06f2614af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADB 14564 bytes

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