Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e2ef5ff4cb44c1…

MALICIOUS

PDF

41.1 KB Created: 2020-08-15 06:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0c18fec02dd7cc5e300ef76607c557b SHA-1: 1e0274ee8d9c4fa902d9a834be7e7921afd7f2ec SHA-256: e9e2ef5ff4cb44c1f24d77e6b21a8ff772fb0d1991bceb898dc17a045913ddc4
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=arcane+legends+auto+bot. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent of redirecting users to potentially harmful content. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=arcane+legends+auto+bot
    • http://zolopanas.lisapellingdietitian.com/uploads/1/3/1/4/131408738/dfb5ec78b.pdf
    • http://wogukux.floydtribute.com/uploads/1/3/2/7/132740961/1067979.pdf
    • http://files.blackbayhorsefarm.ca/uploads/1/3/1/3/131381518/dagitomilakomanu.pdf
    • http://files.67writer.com/uploads/1/3/0/8/130874205/panodenire_ludazeveme_kuberi_gitakex.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/green_felt_free_cell.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/nogugenixe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/2659271016.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/oxford_english_dictionary_free_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/atmega2560_microcontroller.pdf
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/fupir.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/annuity_calculation_formula.pdf
    • https://cdn.shopify.com/s/files/1/0450/8113/3219/files/financial_reporting_cpa_pass_rate.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_off000062e2.bin
133305546e21fe8350a26c60634cb2ddec4fb41356cc98918d3d53e699faca85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 5236 bytes
font_01_sfnt_off000074ad.bin
32f5b88b23f0d20175f628786a8327bb8d3d47aa30fa225e351cb522472fba92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AD 10420 bytes

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