Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4d956d39a17f77…

MALICIOUS

PDF

36.9 KB Created: 2020-08-20 10:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d8aac0019503d50a472685a4f35be9 SHA-1: c3c523eaa412cbb5dd41e9d4f52bb5742579eee7 SHA-256: ab4d956d39a17f7759e610bce69acfb1d19bdb874a1f73ae5046f3c7c1a6316c
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common tactic for distributing malware or leading users to phishing sites. The document body, though heavily obfuscated, contains the malicious URL and also references a popular movie title, suggesting a lure to attract clicks. The presence of numerous embedded links, many pointing to Shopify domains hosting PDF files, indicates a link farm or SEO poisoning attempt to improve search engine ranking for malicious content. 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.ru/pify?keyword=nattamai+hd+video+song++tamil
    • http://gawuwu.juniorbones.com/uploads/1/3/2/7/132710712/tizov.pdf
    • http://wetul.ndschoolfortheblindfoundation.com/uploads/1/3/1/8/131856772/wirupiwurarepu.pdf
    • http://files.brifkin.com/uploads/1/3/2/6/132682989/98cb1de0aa6a5.pdf
    • http://netegoxe.akmittal.com/uploads/1/3/1/3/131384771/risada-rafejubu-wurekirozoxori-porivewaxetuxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/9027/8568/files/340_area_code.pdf
    • https://cdn.shopify.com/s/files/1/0430/6357/4682/files/rafudalefag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/gililejabulusiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/20444697289.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/gageb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xifenapovomizozutuxokanap.pdf
    • https://cdn.shopify.com/s/files/1/0434/5649/5769/files/luworuzanaxow.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/94253705467.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/11374435652.pdf
    • https://cdn.shopify.com/s/files/1/0439/3402/3848/files/ratabodabefuvojazobapira.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004545.bin
891fda216d3b1468c8131edaa2f569dcceee346441e65c899ada6c43b20464b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4545 4960 bytes
font_01_sfnt_off00005605.bin
40b67dd8604a775bbf74fb2dd9002a4f37a3dc6a3e3ac1d9f5e42b8c7e961dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5605 10192 bytes
font_02_sfnt_off000078d4.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 4324 bytes

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