Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a91d2c0f4031b0…

MALICIOUS

PDF

45.1 KB Created: 2020-09-17 23:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58e1d05520fa2f955bdea949bbc0ab35 SHA-1: 587cd92814c3c97644e85eaec9c0f3f17a0a349c SHA-256: d1a91d2c0f4031b09216455dcd86040edb46222f42956ba37a1ada09545a2f0b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=diccionario+biblico+pdf+descargar+gratis'. It also exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0437/6618/6135/files/sample_casting_call_template.pdf'. The document body, though partially corrupted, contains text related to 'Diccionario biblico pdf descargar gratis', suggesting a lure for users seeking free content. The primary intent appears to be redirecting users to malicious infrastructure.

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.me/wix?keyword=diccionario+biblico+pdf+descargar+gratis
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/sample_casting_call_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/febit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4584/5152/files/american_heist_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3939/files/towinixozawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/92672523221.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4016/files/mojelijamugibadurixus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/votij.pdf
    • https://cdn.shopify.com/s/files/1/0428/7397/9043/files/4706662185.pdf
    • https://cf8115f1-6ea8-47e5-9a39-f7a55bfe5f60.filesusr.com/ugd/9edd50_c6cfadff238d4962bf12dc4a4ff5a629.pdf?index=true
    • https://7750aace-30b5-4124-bd9b-06b4767ebfd6.filesusr.com/ugd/ebcc4b_0dcfa333c32f4c9193729033fc18d7a7.pdf?index=true
    • https://0051bdad-89b6-4540-9e97-228fe4130456.filesusr.com/ugd/fdd6c2_cdf8214183db45bb906d732e216f661f.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/4214/4407/files/gangplank_guide_8._12.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/xuvafuminim.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_off00006cbd.bin
90e501d50321ee659d1ba14476a8a1e04fe58ccdf9115d663b027d659b577260		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBD 5464 bytes
font_01_sfnt_off00007f5e.bin
c48777e11190d9c1a9038f80b680dae3362f1e53ff1903f8d14e56fd7690fe19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5E 11704 bytes

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