Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f60337dca90d134…

MALICIOUS

PDF

42.3 KB Created: 2020-08-18 12:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a717a9ca9184336ad18669c909d3e912 SHA-1: b727afd9604b301c56daea2624f0e875999bf633 SHA-256: 1f60337dca90d134a51a82d736ae59bbde632f31e3f78db7cde6801742e9c7d6
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Infinity war quiz answers' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. The primary malicious URL is 'https://ttraff.ru/pify?keyword=infinity+war+quiz+answers', which is likely used to redirect users to a malicious 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.ru/pify?keyword=infinity+war+quiz+answers
    • http://files.lakevilleroboticsmn.com/uploads/1/3/0/7/130775645/zerutumo_zapulesuriro_relal_vevunoruruk.pdf
    • http://files.chna18.org/uploads/1/3/1/3/131383760/tikawonigenozor.pdf
    • http://luweset.dailymewscharlotte.com/uploads/1/3/0/9/130969205/jasuzejukatisokerivo.pdf
    • http://vofek.suburbanmusicstudyclub.com/uploads/1/3/0/8/130874330/jiwozubi_sowusonobipuked_jerasupi_xiwabura.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/13225560933.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/semigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mazimuzoxoku.pdf
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/geometric_forms_art_lesson.pdf
    • https://cdn.shopify.com/s/files/1/0446/3548/8419/files/python_brute_force.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/johnsonite_rubber_base_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0454/6487/9256/files/pdf_to_word_i_love_my.pdf
    • https://cdn.shopify.com/s/files/1/0431/5696/3479/files/25515849667.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/58425771555.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/dijolujinodozugenofutajim.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_off0000540d.bin
75739a5a40eff1d49677c38bc9ccd9b404cf2b5e2ee1be9b86dbb48e0b9009e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 5036 bytes
font_01_sfnt_off0000655d.bin
9e69b9edd93fcbaa49e4e4b9e51161f00d4bedb1d0f3a24967727055136d8c22
pdf-font-stream PDF embedded font (sfnt) at offset 0x655D 10008 bytes
font_02_sfnt_off000087d4.bin
f16cd67867b18cdd623629dc4245b8d8861c8210ed70bc0bf2a09e14863ad9d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 16064 bytes