Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ae1a35883a8aff…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 11:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8d6eec1cbe0a85ab65cd8ab5a6b41e1 SHA-1: 50c2949b33e5e06980149c2b4961500936c2b5cd SHA-256: 57ae1a35883a8aff6d4d7311532c121fd6492d6a43ba872929820d61c912474c
130 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or redirection tactic to obscure the final malicious destination. The presence of a 'download button' heuristic further supports a lure-based attack. The document body, though heavily obfuscated, contains the malicious URL, indicating the intent is to redirect users to potentially harmful content disguised as a tutorial.

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.com/pify?keyword=bloodshed+dev+c+tutorial+pdf
    • http://wijul.changinglungcancer.com/uploads/1/3/1/4/131407469/punawitak.pdf
    • http://files.vegas3dkids.com/uploads/1/3/1/0/131069934/8570453472e89.pdf
    • http://files.dubitancy.org/uploads/1/3/1/4/131409677/xetozululopigapa.pdf
    • http://files.rcoeliohub.com/uploads/1/3/1/3/131379296/kenemaliwat_joxopopole.pdf
    • http://files.cobusinessadvisors.com/uploads/1/3/2/8/132816096/5578153.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/lerumijogedizalir.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/kagopab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/samotamuzulikekoxelij.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/54733738918.pdf
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/list_of_b._ed_colleges_in_telangana.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/bizutewepavozepulejireki.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5663/files/ediacaran_extinction_and_cambrian_explosion.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/85790323474.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/adobe_scan_ocr.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/ib_biology_study_guides.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/utf-_8_encoding.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/28449127930.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomuburisuxenogiduta.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_off0000669b.bin
d26c490402a3528c5be595a92a842787a725c9ab41b097c83119e80536f30e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x669B 5352 bytes
font_01_sfnt_off000078d0.bin
113effe7d37a896cfa6ec679f845ba41c99884c7f6ae42399717beee41419d30
pdf-font-stream PDF embedded font (sfnt) at offset 0x78D0 11264 bytes