Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7d9c22444e4ff6…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 03:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ff2f880c82a215989c529e74369d97f SHA-1: 587b21984f10c2084b299fda6355a0840a02ef8d SHA-256: 1a7d9c22444e4ff6b2d8e1eade3264fd1f9ed15e0561ba9994563d54c0be5374
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The document body, though heavily corrupted, contains text that appears to be a lure related to 'Auditoria informatica de sistemas pdf'. The primary malicious IOC is the ttraff.com redirector URL, which is likely used to funnel victims to a malicious site. The presence of multiple Shopify links suggests an attempt to obscure the true destination or host a large number of lures.

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.com/pify?keyword=auditoria+informatica+de+sistemas+pdf
    • http://files.heroinanonymous585.org/uploads/1/3/1/3/131398125/danawivama-vofomadutideg.pdf
    • http://nejaral.atwatervillagepsych.com/uploads/1/3/0/8/130874493/ae1d26f3c306f7.pdf
    • http://files.lovelifeagain-lifecoachingmore.com/uploads/1/3/1/6/131606343/roxujojot.pdf
    • http://files.montanabirdsurveys.com/uploads/1/3/1/3/131380482/razujekunatuzu.pdf
    • http://files.langsidechurch.org/uploads/1/3/2/3/132303061/3cc50cd3e1.pdf
    • https://cdn.shopify.com/s/files/1/0432/8213/7243/files/29834753462.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/nesivof.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/41203477786.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaxolaxowixinetubosi.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/category_theory_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0437/1709/9685/files/suffix_worksheets_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/blue_room_pretoria_menu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8901/files/14982565584.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/87463953659.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/12346555078.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/41033793978.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_off0000650a.bin
e2bed1e0b024d61609398157c10aaab2bd941689e8f87bdbc2397da393462803
pdf-font-stream PDF embedded font (sfnt) at offset 0x650A 5140 bytes
font_01_sfnt_off00007660.bin
397f9d5ed8808cb2aec54b6900a1e07b54f0b5f462221651df6cf290915cba7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7660 10604 bytes
font_02_sfnt_off000098f6.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x98F6 4324 bytes