Malicious PDF — malware analysis report

Static analysis result for SHA-256 40953728f8771635…

MALICIOUS

PDF

52.3 KB Created: 2020-07-30 07:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3adcd4e34d914cec3120cf6cad65494 SHA-1: 12f50718dfef0e496a6a983b4e7354492d488115 SHA-256: 40953728f87716352f3789acf5ac649060fa3a20831aa9f85d74d4d3df64d9f0
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary heuristic identifying a malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including one pointing to a known malicious redirector (ttraff.com), strongly suggests a phishing or redirection attack. The ML classifier also flagged this PDF with high confidence.

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=al+qabas+kuwait+pdf
    • http://files.survivaltrainingohio.com/uploads/1/3/0/7/130738846/3b7eed5ca.pdf
    • http://files.rosannayoungpianist.co.uk/uploads/1/3/1/4/131437484/getuw-gifukojefig-zolidobupama.pdf
    • http://files.advancedanaerobics.com/uploads/1/3/0/9/130969555/davam.pdf
    • http://files.silverfitnessct.com/uploads/1/3/1/4/131453350/jinonezaxeruxemi.pdf
    • http://files.sandrastudioone13.com/uploads/1/3/1/3/131379325/4cd0832ce4a.pdf
    • http://files.sandrastudioone13.com/uploads/1/3/1/3/131379325/4cd0832c
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/dijorigosekisiz.pdf
    • https://cdn.shopify.com/s/files/1/0439/3736/6184/files/52844709440.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/38630841777.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0988/files/78982438002.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/tapoxes.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5162/files/dipavokinid.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/47859577692.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/77074146337.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/dawis.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/dimifarofewapaga.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/xefifopasabitumuf.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
stream_007_off0000a093.bin
d06b762af5f622cc6f36e3d87dd245d3cccf2013d4b10e68c79215d18e56a9c3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA093 19820 bytes
font_00_sfnt_off00006d7e.bin
b736f59dcf1c535d72bf1bed79ba0d671c375d81d981556d778292e2c3c07ec5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 4900 bytes
font_01_sfnt_off00007e35.bin
57ea59d17df33c74bb133982c0e66d0476c4c33832ab8146080ad7487681ee2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 9972 bytes