Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b3c2e08c0d618d…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 01:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bee94c6b084aa12211f1ac3e5f69fee6 SHA-1: 41dd1728b9fa8584b157b77686d72462c069591e SHA-256: e5b3c2e08c0d618d952ca35718709d31bca143049e6dcf0995ff73d902f0bd0c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious URL identified is https://ttraff.com/pify?keyword=lobosjr+bloodborne+guide, which is likely used to lure users to a malicious site. The document body appears to be corrupted or obfuscated, but the presence of multiple links and the malicious redirector strongly indicate a phishing or malware distribution attempt.

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=lobosjr+bloodborne+guide
    • http://files.ulockitselfstorage.com/uploads/1/3/1/4/131409463/8436405.pdf
    • http://dazoderof.promisingpresence.com/uploads/1/3/0/8/130814297/5308656.pdf
    • http://rewenetit.nitowing.com/uploads/1/3/1/3/131384244/jezonixoregopilofo.pdf
    • http://bodutim.soundandenergy.com/uploads/1/3/0/7/130739024/tosixuviguwu.pdf
    • http://files.coopercatgallery.com/uploads/1/3/2/6/132696171/tixetevovaxamem.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/hebdomada_aenigmatum.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/ripewimumexamotaban.pdf
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/budgeting_and_budgetary_control.pdf
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/loxetosunumenop.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/molakeme.pdf
    • https://cdn.shopify.com/s/files/1/0436/8764/1241/files/tumomobupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/using_algebraic_geometry_cox.pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3915/files/nugufipadukopajixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/31152670894.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/35262749696.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/water_soluble_fertilizers_for_fertigation.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/solefuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/17617224239.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/74396643615.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_off0000601f.bin
7efe4f1e0352023ddf82a210c6e5f9a2b91df5d01c6f9b33539e94d5643b4047		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 4740 bytes
font_01_sfnt_off00007039.bin
46de71d728fde3c3a44697167aeef1a53440760945d0d7e45a3777d5aadc6540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7039 10024 bytes
font_02_sfnt_off0000928f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x928F 4324 bytes

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