Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8bdf2a1c9df6551…

MALICIOUS

PDF

46.3 KB Created: 2020-07-31 15:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c36817910d904f510926d314358d9bc SHA-1: a27b255acd4513d51cc77c482b19362c1b5ebd2b SHA-256: d8bdf2a1c9df65516d3f318d718a2006d5f7dd37631111877b499ca1cd2b1f03
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'SE_INVOICE_LURE' suggests a pretext of an invoice or payment request. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The file also contains a large number of links to Shopify domains, potentially part of a link farm to improve SEO for malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=dynamics+ax+tutorial+pdf
    • http://files.iknodomo.com/uploads/1/3/0/7/130776476/6061009.pdf
    • http://files.recreationlifestylehealth.com/uploads/1/3/1/8/131856146/nerikotuzig.pdf
    • http://files.showmetruenature.com/uploads/1/3/0/7/130738841/miduzuz.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/11589065061.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/38290505271.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3831/files/resowiwobufuzelixufov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/75647784193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/57643611528.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/41122834130.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/nipedalabidujorapewuji.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/20242521678.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/dekoxufirenumabukedele.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.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_off0000782c.bin
2e9667a446a4aa39098c75de2a70fcf454acf148d8b7a89dda4ade6119018bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 5232 bytes
font_01_sfnt_off000089de.bin
d5730325f2553eb20e72ec6d74aeb2fd23f44f05da82149d399b8cd426fa3d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DE 10188 bytes

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