Malicious PDF — malware analysis report

Static analysis result for SHA-256 f113d8b38ec29c47…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 00:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761baf8357498d7e7c2e223388843698 SHA-1: a85e02385a5a8740408cf21f52727a7691fc446e SHA-256: f113d8b38ec29c47fc59f7ffb654b241921df7644bf0e2bee5f978553b26a5de
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=boundless+energy+pdf', which is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=boundless+energy+pdf
    • http://pasivirok.shannonrobertsmith.com/uploads/1/3/1/4/131408738/juwubizibojamixe.pdf
    • http://files.maninithoughts.com/uploads/1/3/1/6/131607093/koxesidipegor_wolaxobadeletul_lezijix.pdf
    • http://files.itbfm.com/uploads/1/3/1/3/131379590/xadezobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/29533956963.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8176/files/rororag.pdf
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/wrong_fs_type_bad_option_bad_superblock.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1809/files/how_to_install_mac_os_from_usb.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9170/files/wiwom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70934180934.pdf
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/acrobat_pro_dc_features.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/galuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/madupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3541/0077/files/ragobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/20347799394.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20785775646.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_off00006f5f.bin
c59d5f45851d97581caad486ce96f4dc9359753f12220625fca0b96d56508315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5F 5152 bytes
font_01_sfnt_off00008101.bin
c87dff24b10169460bcc58bb41872852caedba49b855135f359330e19b50118e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8101 10352 bytes

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