Malicious PDF — malware analysis report

Static analysis result for SHA-256 40623d8240a5e477…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 16:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c06ff2d69f6d3e0d528d8a1c560eae25 SHA-1: c83df780599a60bbfd4db2e0851a1bd011f37ce0 SHA-256: 40623d8240a5e47718977c13c065504fba843ba9777c198e561c9583cd7099f0
160 Risk Score

Malware Insights

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

The PDF contains a lure suggesting a Google Docs to JPG conversion, but embeds a link to a known malicious redirector. This redirector is likely part of a phishing or malware distribution chain. The document body itself contains obfuscated text and the malicious URL, reinforcing the social engineering attempt. The presence of a link farm further indicates malicious intent.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=google+docs+pdf+to+jpg
    • http://files.jrbriscoe.com/uploads/1/3/1/8/131871484/9278459.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/56658650229.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/samefuwar.pdf
    • https://cdn.shopify.com/s/files/1/0430/1727/3497/files/likebelimegobivowulimix.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/2341907699.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/pogotimelab.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/14268879675.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0220/files/causes_of_social_media_addiction.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/guvonora.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/zazodisadorozulat.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/67887795997.pdf
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/nomivunanikunufepiru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/83502878272.pdf
    • https://cdn.shopify.com/s/files/1/0433/5134/3269/files/75033336172.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_off000070b5.bin
4bf4eed107996a42e89a1ed8cdc4cef62e4fa53eef48f5c80c8073aad8eca0f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B5 5124 bytes
font_01_sfnt_off00008250.bin
20255bde5645b462fdd84b76ca481aac007fcc1694091fc2be48c603e70341ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8250 10492 bytes

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