Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee385a4b618abaa9…

MALICIOUS

PDF

44.0 KB Created: 2020-08-08 18:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdad4f43a91e9b6293f141b33879bb33 SHA-1: 17ba6affc5da5f7c3ce2c3ffb635bf50fa888462 SHA-256: ee385a4b618abaa9b4226de0d8a1e7d56feaf4fee5389b6fb32bf392580cbbde
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to a link farm hosted on Shopify, and one critical link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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.cc/pify?keyword=alcoholismo+oms+definicion+pdf
    • http://files.janelleadsit.net/uploads/1/3/0/7/130775135/bc5c2c.pdf
    • http://files.royalrampsandrails.com/uploads/1/3/0/7/130776142/tijexelunusulu_gonibubeguwot_gofivaneluta_vidazeg.pdf
    • http://files.mexicoluminaria.com/uploads/1/3/2/7/132740285/f130c64.pdf
    • http://files.harrisburghigh.org/uploads/1/3/1/3/131379371/d7ff44.pdf
    • https://cdn.shopify.com/s/files/1/0446/1549/9939/files/attestation_de_salaire_dclar_cnss_tunisie.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/21314957221.pdf
    • https://cdn.shopify.com/s/files/1/0434/2326/9014/files/48259449373.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/selal.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/sigebis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8828/1761/files/arabiyyah_bayna_yadayk_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/93195411050.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/71765234027.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/vivepazovagiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7336/2325/files/davetopujusefikor.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/15122890306.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/how_to_install_resource_packs_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0447/2075/0745/files/honeywell_chronotherm_iv_plus_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/chauffeur_license_practice_test.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006119.bin
36dd914395da168474326a9025df78a903a304f41ba6dc7332eb564177ee6380
pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 4784 bytes
font_01_sfnt_off00007123.bin
95a34b0c4483a65669ed6d567f57277b4a01d92ab0506e444e7595104ced5d01
pdf-font-stream PDF embedded font (sfnt) at offset 0x7123 9868 bytes
font_02_sfnt_off000092f0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x92F0 4324 bytes