Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2be526ca39a4b15…

MALICIOUS

PDF

36.8 KB Created: 2020-08-30 16:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19102c6c36d93939d736b760c773a09c SHA-1: d1bca4a12a19df9a59938f9590e0d1a2992fcc6b SHA-256: b2be526ca39a4b15d2f8ec350cbde75918fdc5b8b979a16c4521e8d9b409532f
140 Risk Score

Malware Insights

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

The PDF file contains a lure instructing the user to enable editing, a common tactic for malware delivery. Upon enabling, the user is presented with a link that redirects to a known malicious infrastructure. The document body itself is heavily obfuscated but contains the malicious URL, suggesting the primary goal is to redirect the user to a harmful site.

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=principles+of+marketing+by+philip+ko
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/liwukepurenugiweda.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/sexusezofifefajinuvugaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/clinical_pharmacy_and_therapeutics_herfindal.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/27915729376.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0629/files/black_platform_heel_sandals_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/cannot_execute_binary_file_exec_format_error.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/96186116162.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/xogididotipisomawisovi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8382/files/54338491835.pdf
    • https://cdn.shopify.com/s/files/1/0434/6888/2072/files/76011545451.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/ruxesogereki.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f5f02556bc54717b8328048df782305.pdf
    • https://static.usrfiles.com/ugd/804ff6_01771d60f4b94128817e1d4a062ac5fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_322e4f4a2bfd41cbb1aa844cf6c76590.pdf
    • https://static.usrfiles.com/ugd/33c377_36f0a0e5b35f4c978157dbc28bbd33a0.pdf
    • https://static.usrfiles.com/ugd/cec570_d187679901af44dcb7cb56a54002276d.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_off00004e57.bin
d21d6db89fe44ff6dce92c729cff6d393c498472ef9ec73dc129ec2c9d76e4cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E57 5736 bytes
font_01_sfnt_off000061b0.bin
23b3f0b8c860b3d2a05be575012a74154b9897bf14cf045c5b24d18676f4da02
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 12796 bytes