Malicious PDF — malware analysis report

Static analysis result for SHA-256 2321eeb024a5deb5…

MALICIOUS

PDF

50.1 KB Created: 2020-08-03 01:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 034978e9bc9b52be03a52c56390c93fb SHA-1: f7ab0dbe05d0c24f0303cf1652ce8b1d330e74a0 SHA-256: 2321eeb024a5deb5ff272f36c812acae96fa97e8f9c8fa5fa412d004033c1294
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.ru', indicating a likely attempt to lead the user to malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body contains the text 'Pocket script download' and the malicious URL, suggesting a lure to download or execute a script.

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.ru/pify?keyword=pocket+script+download
    • http://files.difficultjet.org/uploads/1/3/2/7/132740375/puzilazunup-gulesirosolene-bebatib-wusebi.pdf
    • http://files.countrychicksoaps.com/uploads/1/3/2/7/132712358/dufekaweni-budile-gilobemoniz-pomewed.pdf
    • http://files.preecelightning.com/uploads/1/3/0/9/130969190/a2546e4.pdf
    • http://files.chagahealthandwellness.com/uploads/1/3/1/6/131637014/735976.pdf
    • http://files.elementaryschoolheads.org/uploads/1/3/0/7/130738914/a3983ea.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/ludaxipuzoresurozodulef.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/12317118876.pdf
    • https://cdn.shopify.com/s/files/1/0436/6496/5782/files/wesumuworup.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/konavuvofimoxorurileri.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/87763624861.pdf
    • https://cdn.shopify.com/s/files/1/0434/2333/4567/files/wheel_of_time_chapter_summaries.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/dipakofevetas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/sozekutokejupejofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/zunipaxifurozi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/76291140064.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/37351067825.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_off000086e4.bin
22210c189dc53ddfc94c09b9c799f5c6f43c14396e9f22f8760598625d52c032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E4 5224 bytes
font_01_sfnt_off000098cc.bin
292d0ba43e963226d787ced3616302f25da4135e28dc3e811fbda5a93265d424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98CC 10260 bytes

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