Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cdd1ac4b66a5ad6…

MALICIOUS

PDF

44.1 KB Created: 2020-09-17 17:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 073f6bf855b491e73ff784a5d0741801 SHA-1: dc11c25851c97f9a23dad8266e85cd24bd679301 SHA-256: 7cdd1ac4b66a5ad6f1810fff43309a917408e91e04d8ea14281bcf53b343f174
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=everything+everything+google+drive', suggesting a phishing or redirection attempt. The presence of many external PDF links also indicates a link farm, likely for SEO manipulation or to host further 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.me/wix?keyword=everything+everything+google+drive
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/mewusebetijurupidow.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/richard_bandler_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0439/6256/4766/files/74293947009.pdf
    • https://cdn.shopify.com/s/files/1/0481/7679/1703/files/palliative_care_guidelines_2018.pdf
    • https://0443c472-9ab8-44f4-82d7-304145149e9c.filesusr.com/ugd/76156b_8b792269764340659641ea3faac76bf9.pdf?index=true
    • https://e7f3a18f-655a-443d-94fc-4b410d7a0992.filesusr.com/ugd/3f8d85_19f9a6a3056e4159a14297c3aaa7bd14.pdf?index=true
    • https://7d4971df-eef5-4a38-bb09-90f69f034afd.filesusr.com/ugd/2ac701_45d8888144ec45468804d0d96c6b6e77.pdf?index=true
    • https://f8432f2a-5402-478e-8b9e-c201ee778200.filesusr.com/ugd/7dfe85_56e4758700074ede830bb4c797608c6a.pdf?index=true
    • https://3626c5e0-8325-4a40-9f13-8745f58512a6.filesusr.com/ugd/957eb4_8c9c16118fa7446393f9c4db3e82fdbe.pdf?index=true
    • https://f42eb2e2-1b41-4057-bb07-2a5cab671c70.filesusr.com/ugd/95bb70_e32f36e920f6440d900bc9eb8473948f.pdf?index=true
    • https://a4cf1495-b238-43f4-9d69-b799063fa37c.filesusr.com/ugd/01f9b9_2e78821f9cc84e8e890e37fc71052fe7.pdf?index=true
    • https://475c3454-429f-4676-b905-9a18e31a348a.filesusr.com/ugd/8acad3_97964240267140bd874149f6ed2dacf1.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/zikegole.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5654/files/weather_report_bareilly_tomorrow.pdf
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/89720047323.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/79412775803.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/sexiritakinaputobeb.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f22.bin
497c388c0fb3f4775ed721ce75a79f11a92abab55e76e09670cd48ac214b2827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 4816 bytes
font_01_sfnt_off00007f8f.bin
a4dd3dc66f42277df9ee6784b4aa0ffb79b6f058c01eab78d8f743f0368afcbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8F 10360 bytes

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