Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e929025f504532b…

MALICIOUS

PDF

37.9 KB Created: 2020-08-06 21:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c22486d16b936913f9e2ffa5f4ce0134 SHA-1: 993096252fec3778cd572dddf7f428b0d5c99b37 SHA-256: 2e929025f504532bbc0fc4d86df0e22fdcdfd99ed0b5f3d1ed9506cb0db6e966
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, also contains this malicious URL, suggesting the primary intent is to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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=zimbabwe+sign+language+alphabet+pdf
    • http://files.firstchristiansalemva.com/uploads/1/3/1/3/131379706/24de0efd459da.pdf
    • http://files.reichertz.ca/uploads/1/3/1/4/131407737/mamirupizovig.pdf
    • http://files.maxxglassfg.com/uploads/1/3/1/3/131383318/1841165.pdf
    • http://files.gotothezonewellness.com/uploads/1/3/2/8/132816202/vizorojasoko-wokukupulin-tutozuziruxovu-ladil.pdf
    • http://files.lab302.net/uploads/1/3/1/8/131871535/xoxonizoguwuw-vasexaboxukil.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1477/files/craftsman_8hp_chipper_shredder_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/14907967210.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/setixinojed.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/bowexudazasunuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/ropaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9563/files/tusulotefivufunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/definite_and_indefinite_articles_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/13326031008.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/vajozexozuwapototikenulaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/64923288941.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/tobimujuwizosaruxe.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_off0000554f.bin
d9eb9500667598ebe93bd76992cc774ba623211b42e62e00ccd6290e9527fc86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554F 5548 bytes
font_01_sfnt_off0000681a.bin
4ac5782b0fc96183fc3f33c6cb7bc1f6cf4ef12df451ea353192d5dc5b59e7ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 10072 bytes

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