Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d60ffc9c07144a…

MALICIOUS

PDF

55.2 KB Created: 2020-08-10 10:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e573d494d62055a00ecc7fb8aaf7560f SHA-1: a330f6671a6ab8db78acd658004da3502bf051be SHA-256: 86d60ffc9c07144a277b3448a0c30fb04cfb9d275be947932b2b85e652811b0d
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious infrastructure at ttraff.cc. This indicates a phishing or scam attempt designed to redirect users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=manual+m%25C3%25A1gico+de+kabbalah+pr%25C3%25A1ctica+pdf
    • http://zogegeda.csdbyjessie.com/uploads/1/3/0/7/130739024/8817977.pdf
    • http://files.vnecessities.com/uploads/1/3/0/8/130874205/7af45a5546df11.pdf
    • http://files.ridgwayconfections.com/uploads/1/3/1/1/131163599/wazeni-nakojotujuxesus-kaboz.pdf
    • http://files.whatsanoptician.com/uploads/1/3/2/7/132741375/gogezuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2303/files/dell_poweredge_r740xd_specs.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/tefezebixuwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/treatment_of_ovarian_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/vatekabaruxikilowumowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3043/6247/files/nekamokabujumonok.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/chemical_properties_of_aldehydes_and_ketones.pdf
    • https://cdn.shopify.com/s/files/1/0440/5798/5189/files/checking_itunes_library_stuck.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/convert_base64_to_javascript_online.pdf
    • https://cdn.shopify.com/s/files/1/0438/3975/0294/files/katofafadenanobab.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/19923917218.pdf
    • https://cdn.shopify.com/s/files/1/0448/7489/1431/files/business_communication_subject.pdf
    • https://cdn.shopify.com/s/files/1/0433/9879/1329/files/jukon.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_off00008f9c.bin
7746dfd1bd1cc90d8cfb065b524cf2a1fcebdf38b1795542fe993394cb3548cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9C 5832 bytes
font_01_sfnt_off0000a2d0.bin
177477f05aac3174677ac30bf88c33dee77b2874e491713e469fef5c7fb9828a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D0 13184 bytes

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