Malicious PDF — malware analysis report

Static analysis result for SHA-256 400fcbd73af639b5…

MALICIOUS

PDF

54.3 KB Created: 2020-08-18 22:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fbfb3cae5b6d0b16acbda18be3b0b06 SHA-1: 57cd15bc456cec90a9199c2cf45d1d90f5b79172 SHA-256: 400fcbd73af639b5201907ff34f33541f8c27840a72acf12b9595611f3cda9d2
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=fake+love+drake+piano+sheet+music'. The document body, though heavily obfuscated, contains text related to sheet music and the redirector URL, suggesting a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

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.com/pify?keyword=fake+love+drake+piano+sheet+music
    • http://files.firstaidresilience.com/uploads/1/3/0/9/130968917/e093b68f8a24.pdf
    • http://files.bcwawomen.com/uploads/1/3/1/0/131071277/3818016.pdf
    • http://files.soundconceptsph.com/uploads/1/3/1/4/131455463/4363043.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/bagavorajagajezubikawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/noxokamemaluvupopofekibet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5041/files/algae_biofuel_production.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/ipratropium_inhaler_davis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/18033544824.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/9259968321.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/eye_to_eye_goofy_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/misukijuju.pdf
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/d_d_manual_of_the_planes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4471/files/bitsat_previous_year_papers_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/19992262906.pdf
    • https://cdn.shopify.com/s/files/1/0433/7333/0593/files/79713450810.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_off00008128.bin
ec927e86c088f7147c67ae9ab6db08b7e53d71390e0be5008bfc68612429f5aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x8128 5392 bytes
font_01_sfnt_off00009357.bin
3e9133f8c49f98a3e0c37ab7e8d2ac5b17eb5a9d20b3e80070896afff28184b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9357 10380 bytes
font_02_sfnt_off0000b6fb.bin
84650fe671c70ac66f3af0994468c9b9feb42d01905b0f030d5781e095ef8e52
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6FB 16100 bytes