Malicious PDF — malware analysis report

Static analysis result for SHA-256 56286b71b7b3951a…

MALICIOUS

PDF

50.5 KB Created: 2020-08-09 13:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4eafec34f8b4c141ed57187e37da626 SHA-1: 7837ba2c2a6a96e3e8dd9ed06647aec65dbb07a7 SHA-256: 56286b71b7b3951ab6095abd5c9526056692ddf66b671225188ffbd1e2d591d6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, including one pointing to a known malicious redirector, ttraff.cc. The document body, though partially corrupted, includes the phrase 'fernando botero biografia pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a link farm and a critical heuristic firing for a malicious redirector strongly indicates this PDF is designed to lead users to harmful content.

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=fernando+botero+biografia+pdf
    • http://files.brothersinthewild.com/uploads/1/3/0/9/130969543/73c184c8f8063.pdf
    • http://files.ianglassfitness.com/uploads/1/3/2/6/132682239/9068346.pdf
    • http://files.overseersmasonicriders.com/uploads/1/3/0/7/130776208/depuzuzuwija.pdf
    • http://files.portergenie.com/uploads/1/3/2/6/132681771/dorezure_getifukubu_xawaxosan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/maviwotoliloxojisofija.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/22549071827.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/wifepadurixotamujas.pdf
    • https://cdn.shopify.com/s/files/1/0436/4517/3910/files/kavonixizorikosavus.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/lufufemiditawupowudonewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/82408100844.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/mewujopamukiziwavunazudos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/63633864095.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/35955678084.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/miluresis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/tepariferigixel.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/alvin_and_the_chipmunks_songs.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_off00007b55.bin
584447673ae4773c8c62fca6b4018412774123cdc4f5349e28aaace1286dea75
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B55 4880 bytes
font_01_sfnt_off00008bf8.bin
16e5462932c51dac5f6e35cfd031ed241b8117065c88cc70b962b99c5ffe8480
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 10480 bytes
font_02_sfnt_off0000af04.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF04 4324 bytes