Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d741826a1cc4552…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 20:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfc1a0ef4526effacd8f0685a3ba87cb SHA-1: 14afcc4dd3afaa7cf2ed16e698235b8d50ee3870 SHA-256: 0d741826a1cc45524081e8c3c169705f8598303bf6b0ed890b72df03f9979c33
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector URL, indicating an attempt to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URL, 'https://ttraff.cc/pify?keyword=country+airport+codes+pdf', is a known malicious redirector, suggesting the document's primary purpose is to facilitate further malicious activity.

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=country+airport+codes+pdf
    • http://files.agenda2001consulting.com/uploads/1/3/2/6/132681448/2577048.pdf
    • http://nejelow.cgcatogo.com/uploads/1/3/1/6/131636855/miwowizomu.pdf
    • http://files.billyboards.net/uploads/1/3/1/3/131379594/6948390.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/wefapotexadepivekirijez.pdf
    • https://cdn.shopify.com/s/files/1/0432/9750/5435/files/conda_install_nltk.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/zesudibapezilepipanunoje.pdf
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/mogigiwage.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/52276722836.pdf
    • https://cdn.shopify.com/s/files/1/0447/5600/9111/files/student_attendance_management_system_project_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/19204631755.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/binufewotiwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/59664530578.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/quaker_state_oil_filter.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/american_gods_episode_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/devore_probability_and_statistics_9th.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7959/files/43604654625.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e46.bin
5bfe71ad2a3a2388bcc64725d2f75eaf54ea1348197b93e9077e1f736e11fbf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E46 5124 bytes
font_01_sfnt_off00007fcb.bin
c8a171a931394c2c57c8505d35e92315433caaf131dad7d60291eca039cca66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCB 10260 bytes

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