Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b69873c577ae56…

MALICIOUS

PDF

35.2 KB Created: 2020-08-22 20:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 407f752a731906c36fd0823debf28bb0 SHA-1: 452512f0353de4f4d47e447b48662dcb24e03f19 SHA-256: 89b69873c577ae56a9b3a0f1b2449d7320a496fa46c84e16e55ba1cc1d265648
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, disguised as a download for 'crackle free movies and tv apk'. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The presence of a 'download' call-to-action phrase reinforces the lure.

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.com/pify?keyword=crackle+free+movies+and+tv+apk
    • http://files.cougarosity.org/uploads/1/3/1/3/131379761/dalurupixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/19115897258.pdf
    • https://cdn.shopify.com/s/files/1/0429/9030/5443/files/buongiorno_principessa_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/59376273447.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/22480182260.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/73396887366.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/58107345115.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/6175121332.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/84473210701.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/zixadupoloni.pdf
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/40636773016.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.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_off00004b91.bin
50d22162b957e4ed80588ece79d4504716b90ff98af7e30d410f942e1de2d8bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B91 5332 bytes
font_01_sfnt_off00005d9c.bin
bd07eb91d8a746bf135f985c1d336736e5e6bf4c904a07aaf364762f1cd5cf5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9C 10084 bytes

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