Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7656f8041298ef6…

MALICIOUS

PDF

44.9 KB Created: 2020-09-01 00:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60d62754036dc85156c571ef22106d17 SHA-1: ec8ae6692308c40d2a1bbac87a698eb364311cf2 SHA-256: d7656f8041298ef6f69ff19bfa22da53b7b1249c76f0c11f0325020d501fb31a
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'vector brochure design pdf' and includes the malicious URL. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

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.ru/wix?keyword=vector+brochure+design+pdf
    • https://static.usrfiles.com/ugd/cc089a_93e179cffded422c8ca463f911cc41d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_383bdc5052fa4b84b995de28f0d029a0.pdf
    • https://static.usrfiles.com/ugd/0286dd_056649c0360743d888e010a5753bb691.pdf
    • https://static.usrfiles.com/ugd/9421c8_ea4126ea76dd4e388e1715126d484359.pdf
    • https://cdn.shopify.com/s/files/1/0437/3371/3050/files/nivolejofuwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/7288639807.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/mosque_architecture_in_kerala.pdf
    • https://static.usrfiles.com/ugd/d775a9_71b91fec57584d0c9b1536ece1b96491.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a5f2dd4af0e47188c580170f612d5ce.pdf
    • https://static.usrfiles.com/ugd/a91264_bfa7fadecbdc41a6b2b801925ffbfec7.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d1f4062f4564fcf9ee63f59a0a84290.pdf
    • https://cdn.shopify.com/s/files/1/0438/2952/6690/files/2003_saturn_l200_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0451/4159/0170/files/positive_emotions_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/25423661791.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/30174675147.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/jagiwepa.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_off00007160.bin
c9b2e645dd653b3ecc538093c05eb6e93b3625ecd7a1b6111baeef855ce4f994
pdf-font-stream PDF embedded font (sfnt) at offset 0x7160 5280 bytes
font_01_sfnt_off0000834f.bin
46de7e78fd8c08cbc78bb56357982541645f19ed14998a1a3308663be1afbef4
pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 10208 bytes