Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c4ee73438f92f60…

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 21:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36fc6fc850e50bc67b4e4ecda123c4af SHA-1: d1144d6afe5a28e21ede3cc17f0b1d186d4dfc66 SHA-256: 5c4ee73438f92f6056dbe71511a3e05d22e9440aaed1897e9dfabd9eb4eeb31c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/wix?keyword=warrior+goddess+training+facebook, indicating a potential distribution or phishing vector. While no scripts were explicitly extracted, the nature of the embedded links and the malicious redirector strongly suggest an intent to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=warrior+goddess+training+facebook
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/88647519764.pdf
    • https://cdn.shopify.com/s/files/1/0437/6451/4967/files/nutonijogejefogik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/hanuman_songs_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/8009446275.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/affaire_dreyfus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/sorebabunozeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/verizon_channel_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/15563060521.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/zozezegaguraporujitexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1725/7628/files/54696081142.pdf
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/a_drop_s_journey_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0463/6816/1953/files/jutifag.pdf
    • https://cdn.shopify.com/s/files/1/0447/8212/5205/files/alpha_beta_pruning_in_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/sinoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/fonatawatu.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053ea.bin
9c5ea255688ee0bc47fe23d6b06031fe00b8586244a90832dcaf61e0434d4df4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53EA 5372 bytes
font_01_sfnt_off0000664a.bin
14a78e0f5e88aa188244e7b8d8e04fe8f2d49b1e2d25efd524b4385bf2b0a799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664A 6652 bytes
font_02_sfnt_off00007815.bin
fd2a1f93ebaab8c2652a1bd06bb201327270fac9c7f33ba905de8e7bf12732d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7815 9776 bytes

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