Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3438d5bb717e1b…

MALICIOUS

PDF

72.6 KB Created: 2020-08-08 03:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009a42f882030957544e09946b87f30e SHA-1: 700d071e716e5c9350ca31238cd9e2dd56a5a9d4 SHA-256: bb3438d5bb717e1bbda3eb137c714c513e69d6cc184bf4b005037467c907779d
150 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be the embedded malicious link.

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.cc/pify?keyword=cartesian+to+spherical+coordinates+pdf
    • http://pipoda.ncwiba.org.uk/uploads/1/3/2/6/132681670/9565335.pdf
    • http://files.whiteshellcommunityclub.ca/uploads/1/3/2/7/132710748/roxamepitudenaniwuno.pdf
    • http://files.mpvtbk.com/uploads/1/3/1/6/131607063/4348b025c10e.pdf
    • http://jajix.zalc.org/uploads/1/3/2/7/132741334/merevi.pdf
    • http://files.blairmielnikdesign.com/uploads/1/3/0/7/130776200/cbe841bd9.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/52613098747.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/85574958445.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wakudegebemufajetexu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/35612207522.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/94926520149.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2550/files/aperturas_modernas_de_ajedrez_nick_de_firmian.pdf
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/dobimobopatazo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/rsa_algorithm_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/fenabup.pdf
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/andrographis_paniculata_chemical_constituents.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/10027114949.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_off0000b9a8.bin
7ba7d07a1a692a6fce8a091684e51f936d03a7c9cf7ea01e1f140ad9d638f6fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A8 5148 bytes
font_01_sfnt_off0000cb20.bin
7621d0dd74407fe6839b8220fa6c24139b760013efd830bc7634b351159cad97
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB20 16604 bytes
font_02_sfnt_off0000ff14.bin
f7e8a3faf23f9f298c1f1e9a522c602c6c035f86cad05057c268c1d59adb4182
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF14 16356 bytes