Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c997ba76df6b04f…

MALICIOUS

PDF

47.9 KB Created: 2020-08-09 06:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1c633864ad471269126911f0a6970aa SHA-1: 6dee25b41c2528396966814b6079187f41264890 SHA-256: 5c997ba76df6b04fa74aacdefe2b9da8934a08d763c3c7b3c696b5412ba9702a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including a critical redirector URL (https://ttraff.cc/pify?keyword=rainbow+rowell+wayward+son+pdf), indicating an attempt to lead the user to malicious content. The ML classifier also strongly flagged this PDF as malicious. The presence of a link farm suggests a tactic to distribute malicious content or engage in SEO manipulation for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=rainbow+rowell+wayward+son+pdf
    • http://files.dominiquemarguerite.net/uploads/1/3/0/7/130739084/5698602.pdf
    • http://files.maptecit.co.uk/uploads/1/3/0/7/130740184/vuboravevox-ladusikigunebaj.pdf
    • http://files.blueorchidmassage.com/uploads/1/3/1/4/131453251/d8e60cd8775b7.pdf
    • http://wujob.msbui.com/uploads/1/3/1/4/131453416/481757.pdf
    • http://:/www.sbpra.com/HowardGeorge
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1274/3580/files/xobevetanidudaturusoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/ukulele_fingerpicking.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/bugirexakavufoxedidegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/xetivelozu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/tikuregolidekunowitomize.pdf
    • https://cdn.shopify.com/s/files/1/0438/7006/0704/files/sivowezizosefuti.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2370/files/65267927871.pdf
    • https://cdn.shopify.com/s/files/1/0432/6119/8491/files/seroboxotoxupijuxuribebis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/hechos_y_actos_juridicos_concepto_y_clasificacion.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072a4.bin
3a56bd1ef103b4bf7f4456f2f2e87cf618d61f0b54e0426e4c1108af8e2bd958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A4 5376 bytes
font_01_sfnt_off00008505.bin
297f52f4236f09ba58e85c0251406db64a4d3221d73012e717b108c12409d6fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 2576 bytes
font_02_sfnt_off00008ec4.bin
c2978e975858d71d6294294e0169d62b06f1dc74dc93bdbd4386e79f9d838802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC4 10428 bytes

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