Malicious PDF — malware analysis report

Static analysis result for SHA-256 24eb8d9fef20ab06…

MALICIOUS

PDF

41.8 KB Created: 2020-09-03 01:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16b47e2e4698cadfe0079e8b3400cf34 SHA-1: db0f32bfc28313e3d916efce08665e1cb5d6b8d7 SHA-256: 24eb8d9fef20ab065f9ca75b6521c0cc229c65fefc537f49ba0132e4c1d4f792
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for "Call of Duty Zombies Mobile iOS". This link points to ttraff.com, which then redirects to a large number of benign PDFs hosted on Shopify. The primary intent appears to be SEO manipulation or driving traffic to the redirector, rather than direct payload delivery.

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.com/pify?keyword=call+of+duty+zombies+mobile++ios
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/research_articles_about_education.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/new_year_accidents.pdf
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/anger_management_worksheets_for_adults.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4087/files/2004958454.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/79565945203.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/libro_la_bella_y_la_bestia_original.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/8555924351.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/29064436955.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/tommy_tuberville_contract.pdf
    • https://cdn.shopify.com/s/files/1/0439/1128/2840/files/coliform_species_in_urine.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4658/files/jovarasosusufokox.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/20175582934.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/20529239596.pdf
    • https://static.usrfiles.com/ugd/12f4eb_5fd744e1451f4bc6a60596866df8808b.pdf
    • https://static.usrfiles.com/ugd/934fc3_0ceac9f1fe7f4e6faddc917c88132628.pdf
    • https://static.usrfiles.com/ugd/b27199_ede61eeab5324ec3aa5271ff5c4c138a.pdf
    • https://static.usrfiles.com/ugd/45e30f_88fb6eb780694d17abbbcc3b0afb47cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_f387e4aade1d4fa9b16ff9bab8f379b8.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_off000062aa.bin
661aa6a44e8d9a97d4d5fa23883846be3bbc06cb2d87ba2ac8d7e8426f85e6d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 5156 bytes
font_01_sfnt_off00007433.bin
bd31d4816cad19de1455e7a31ee59520d9d8a87c9f832b5bc0b4358be869709a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7433 10804 bytes

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