Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abdb127e6f76926…

MALICIOUS

PDF

38.4 KB Created: 2020-08-30 01:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 164f28781b7e4a4190111fad6609f899 SHA-1: 38c3e04bd4f11d9333334ff7d7ff2c0bbf0ba2d0 SHA-256: 8abdb127e6f76926f7103957325d765253b3da43500c0c3b3b947d8b206be497
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains a call-to-action phrase, suggesting a lure. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload. The PDF also contains a large number of external links, potentially for SEO poisoning.

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.cc/wix?keyword=wwe+2k15+for+android+psp
    • https://cdn.shopify.com/s/files/1/0431/1479/1068/files/norton_2015_trial_resetter.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/96000720807.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/inside_al_qaeda_and_the_taliban_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/nibamukenijexegubawavux.pdf
    • https://static.usrfiles.com/ugd/b8c837_58c7cd9e7fb84697a096215b1eac9c71.pdf
    • https://static.usrfiles.com/ugd/b8c837_c05a9009fa644067b1e0193020c6a0eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9480f7a8b664adbb95a5b2b15bbd69b.pdf
    • https://static.usrfiles.com/ugd/a107db_f82c85d68c8244d4ad74a92e56e00761.pdf
    • https://cdn.shopify.com/s/files/1/0431/5211/3820/files/25277491770.pdf
    • https://cdn.shopify.com/s/files/1/0462/8132/6752/files/91195788946.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/lezumogejasuwabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/16661457724.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_off000057eb.bin
5d14f51a5f427298945d361e435b8d611f2223984ea383efbbd27fdd3b71530a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57EB 5480 bytes
font_01_sfnt_off00006ac0.bin
5d3acd34f1dd31afd5e587367e70a7bf5e4cf638a15f54989d8ddcbf8752f99d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC0 10052 bytes

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