Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd30013ab55c6da…

MALICIOUS

PDF

37.6 KB Created: 2020-08-08 16:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1d601ae98891be1e4e0b9be3fdb8a97 SHA-1: d5f6869ab5cd802fdd9b84dea2e987d017258a34 SHA-256: acd30013ab55c6da713452129dee551af00a1722765afd1c716edb276ab9a176
130 Risk Score

Malware Insights

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

The PDF file contains a lure for downloading a dictionary, which includes a call-to-action phrase. It embeds numerous links, with one specifically pointing to a known malicious redirector. This redirector is designed to lead the user to potentially harmful content, likely for further exploitation or malware delivery.

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=merriam+webster+collegiate+dictionary+12th+edition+pdf+free+download
    • http://files.azrielbermant.com/uploads/1/3/1/3/131383269/tuvexerunafi-soxafodepemomu.pdf
    • http://files.thoughtfulhen.com/uploads/1/3/2/8/132814166/7722132.pdf
    • http://files.mi-sheffield.com/uploads/1/3/1/6/131606368/niludavifek_rerodotite.pdf
    • https://cdn.shopify.com/s/files/1/0439/0567/9528/files/effective_communication_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/python_small_programs.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/community_of_practice.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/39307260311.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/21322683488.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/atomic_structure_chemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/lekuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/8239/0440/files/xagetibufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/zelimitajefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/lowunujo.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/subject_verb_agreement_worksheets_with_answers_7th_grade.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_off00005179.bin
6334cd41dab996f518adae842e1bdd3e9709b5f79d78e5f3138eff6bcd6e0788		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5179 6092 bytes
font_01_sfnt_off0000662e.bin
968fe76d11088958b8f96ee2933cf45c102c15c815a79bd700472dc4f412b1bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662E 10208 bytes

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