Malicious PDF — malware analysis report

Static analysis result for SHA-256 566b54174a9d468a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-20 02:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d359aa33c2ae4b8d2a8a1d8d77f0fbe5 SHA-1: fb4d598356fce2cb9285d2f64f5ea0c2d60444dc SHA-256: 566b54174a9d468a21f4b44779a2917efd99b15ef18a2ff86fb50ca42ec9dd98
160 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily corrupted, appears to be a lure for 'Descendentes 3 filme completo em portugu". The presence of a password-protected archive lure suggests the PDF is intended to trick the user into downloading and decrypting a subsequent malicious payload. The primary IOC is the malicious redirector URL.

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.
  • 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
  • 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=descendentes+3+filme+completo+em+portugu%25C3%25AAs
    • http://lugoxoku.strictlybraids.com/uploads/1/3/0/7/130739602/9311515.pdf
    • http://files.stitchconnect.co/uploads/1/3/0/7/130740412/3f715aa22.pdf
    • http://maxom.stand2serve.org/uploads/1/3/1/4/131407067/8072999.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2527/files/sutorepupepazikesu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/76340718077.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/kosakuxumugofone.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/ley_general_de_cambio_climatico_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/84420539119.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/xesegodezazuguxebowirubo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9408/0674/files/fumamavanovedoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/the_foundations_of_empirical_knowledge.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/jax_runes_guide_season_8.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/ramezidig.pdf
    • https://cdn.shopify.com/s/files/1/0440/6788/1125/files/xupogakasimus.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/34693044865.pdf
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/business_letter_sample.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f86.bin
89efd8b156b5c9196675bd107d6da8adbfe760fd3e63d45021de18e6fbd5de50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F86 5460 bytes
font_01_sfnt_off000061bd.bin
a31e3be6eb5563f32366cebb612dcece99dc4fa0f8772840e89127600da83456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 11268 bytes
font_02_sfnt_off000085e7.bin
2fbe0f2b4fe48ca7edce592075601a606a9abf5b16e9efbaf605fed263109796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E7 16096 bytes
font_03_sfnt_off00009aac.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAC 4324 bytes

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