Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e091b4e90b2e592…

MALICIOUS

PDF

56.0 KB Created: 2020-08-21 00:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f54fb7472bbbeb16f603f607bc2c510 SHA-1: df81ceea351708b97d90472d08bb989dd131df25 SHA-256: 8e091b4e90b2e592cb9432220b09a34d51f550a4173580450e561184479c05e7
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'cambio climatico pdf unam'. The embedded URLs suggest a delivery mechanism designed to redirect users to malicious content, likely for phishing or malware distribution.

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.cc/pify?keyword=cambio+climatico+pdf+unam
    • http://bajal.provisopartners.com/uploads/1/3/0/7/130740073/kuwok_zezunizerir_piposu.pdf
    • http://files.etcherrycreekfarms.com/uploads/1/3/0/8/130873804/kosizisini-wujimazebem.pdf
    • http://files.carlakreftnd.com/uploads/1/3/1/4/131437615/kajokuzetula_goreje_zosedobe_mojukud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/82707698120.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/gejagixite.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/bikib.pdf
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/29410833745.pdf
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/20485689963.pdf
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/wimokaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/36421606435.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/ocean_explorer_map_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/bemigulamujutizekosafi.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/vox_ac30_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/99091793972.pdf
    • https://cdn.shopify.com/s/files/1/0437/2132/6742/files/tidekaxetalikuvat.pdf
    • https://cdn.shopify.com/s/files/1/0434/3074/0135/files/portugues_adriana_figueiredo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/pixar_storytelling_book.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_off00009baa.bin
1af1b2a36094248c69a0875b82ecab1b770597170893956a9c4cbd05dbce9ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAA 5072 bytes
font_01_sfnt_off0000acdd.bin
07bb0cc80254f30cfa0ead7f2feeb2671630d93bb4e22335ff63fd72962e1b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDD 11204 bytes

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