Malicious PDF — malware analysis report

Static analysis result for SHA-256 90823972388bc970…

MALICIOUS

PDF

49.9 KB Created: 2020-08-21 10:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86da160738be9d1d59069adec45bac87 SHA-1: 64797c99cea0e71f856a6288c55d32059353047e SHA-256: 90823972388bc9702775811eb9949efa5d0e81d7e80abe994a23069ba0968b46
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. Another critical heuristic indicates a PDF link farm, suggesting an attempt to distribute malicious content or SEO abuse. The document body, though heavily obfuscated, contains a URL that appears to be a lure for movie songs, combined with a call-to-action phrase, further supporting a phishing or redirection attack pattern. No scripts were extracted from this sample.

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.
  • 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.ru/pify?keyword=narasimha+movie+songs++now
    • http://files.soaringtortoiseelectronics.com/uploads/1/3/2/6/132681596/1958130.pdf
    • http://files.ofsilvermills.com/uploads/1/3/1/4/131482915/nusoramalawujezefok.pdf
    • http://files.ed-gecation.com/uploads/1/3/1/4/131483214/8584785.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/bibanofivexadikov.pdf
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/toxegemuwak.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/64504169308.pdf
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/warhammer_40k_necron_codex_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/1033/4620/files/40290040084.pdf
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/2892020204.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/64563919338.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/sibasudatojazisodopo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/power_bengali_movie_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0453/9206/8776/files/judawunudivozafopifi.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_off0000807a.bin
b2a1573f301ddc12052f9a94ee834681611887e42186b8feea5956414762c99e
pdf-font-stream PDF embedded font (sfnt) at offset 0x807A 5188 bytes
font_01_sfnt_off0000921a.bin
71eabf3eb594d5a89d944050c566d9affefd940eb21adad5784407f4c5ba4c3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x921A 12928 bytes