Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08b97a6bbb3b64c…

MALICIOUS

PDF

37.3 KB Created: 2020-08-05 23:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7216b635c82f922275318c0f05202ac6 SHA-1: 7f2ccfbac9d304ad5dc97cab133eb0db3b275b6e SHA-256: d08b97a6bbb3b64c3c629899e1ae2352d4efadbfb6641bffe6c1a1c75972c605
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to 'Calendario octubre 2020 chile pdf' and the malicious redirector URL. This suggests a lure to trick users into downloading further malicious content.

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=calendario+octubre+2020+chile+pdf
    • http://files.whiteplainslodge.org/uploads/1/3/0/9/130969056/8399152.pdf
    • http://files.dreamgirlpublishing.com/uploads/1/3/1/3/131382134/koluzumaroxe.pdf
    • http://files.kdmsepublications.com/uploads/1/3/0/8/130814676/saludifu-radabef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/kurot.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/pafazisiwukumebateliwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/ruginibapiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11286786524.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9076/files/51938751632.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0435/3950/files/86350593757.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/adobe_reader_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/8132044878.pdf
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/validubeliji.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/automobile_engineering_by_kirpal_singh_free.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_off00004767.bin
e6f2683b087ebf104e3b2506c939686a51dbbb4595352ccc41e6022ca237e419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4767 5384 bytes
font_01_sfnt_off000059a7.bin
94d6bbb9815d05d4efab7e847eacc0cf8703f5bf48532508caddc0e0c2bc1fce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A7 14676 bytes

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