Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e595fcc0dca996…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 13:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3dffc87f31805db96cf5be70346d25 SHA-1: d931ce9649a367cd1544a2e74067fac44fcb17a6 SHA-256: 24e595fcc0dca99637557c0bc716567d366e19bebe1ded009c51da9a0079e233
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document template, which is a common lure for phishing attacks. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely to improve search engine ranking for malicious content. The embedded URL and the document body text reinforce the lure of downloading a template, which ultimately leads to the malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pro+forma+income+statement+template+excel+2003
    • http://regobu.dsmtoolworks.com/uploads/1/3/0/8/130873995/369fc1c.pdf
    • http://files.wendypoore.com/uploads/1/3/0/7/130776590/sipenewad.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/15937250280.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/47731692907.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/numerologia_tantrica.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/wedelezudusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/93104188568.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/maruwawixogini.pdf
    • https://cdn.shopify.com/s/files/1/0436/0791/6707/files/api_527_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/28312124083.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/nizakituvipezopubitop.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/87130905764.pdf
    • https://cdn.shopify.com/s/files/1/0449/9626/4094/files/systme_digestif_anatomie.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_off000061f5.bin
baf83c116b6f244142820ecea3860125a6a99a580b00cf2cca66a6f15b6be364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F5 5668 bytes
font_01_sfnt_off00007520.bin
59229a7cf12ae2d26017f1d13af52f5698c65674660839f148592ad8a018dd34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 10016 bytes

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