Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb141cb9d147eb56…

MALICIOUS

PDF

43.4 KB Created: 2020-08-14 18:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a80ba90d7bab560c8dd16f2ec3d30aa3 SHA-1: ce59c1fcd7cddb73da6619aa20b661b77db99da7 SHA-256: bb141cb9d147eb56a46d632bb571970b38eccf82f68097fd8ab49b6de08988a0
168 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and a password-protected archive lure, suggesting a multi-stage attack. The presence of a download button lure further supports the social engineering aspect of this attack.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/pify?keyword=bloody+roar+3+pcsx2
    • http://files.utahmicroloanfund.org/uploads/1/3/0/7/130775310/gurexadudedi.pdf
    • http://files.meganhelm.com/uploads/1/3/0/8/130874493/8ea587e777eb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/34231395008.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/logonixawaregejuvaxeki.pdf
    • https://cdn.shopify.com/s/files/1/0440/1253/5958/files/werubulajiseronarotinopi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/livakedorupokemetewenax.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/nazca_lines_mystery.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/psychological_theories_of_deviance.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/sewonisazata.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6182/files/79808166509.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4646/files/mcmurry_8th_edition_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/75991747104.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bb4.bin
deb2d3a9a3a298d0d1dd0b5fd513b6a6885973d92e3866e8ee6a09e33777ec5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB4 3692 bytes
font_01_sfnt_off000068bb.bin
83960079d5a6f7d4e9c64964dc940a3835378b833fe1c7b99cc5370bf560359c
pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 5580 bytes
font_02_sfnt_off00007bcc.bin
ebdc00fef2b0da1774d623e73a4a8fc159a8a7643cddbef564200186b9c1f56e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 10684 bytes