Malicious PDF — malware analysis report

Static analysis result for SHA-256 0043f07b0ae6fb9f…

MALICIOUS

PDF

40.1 KB Created: 2020-09-17 08:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35b502f6b13d653520b377fa61858679 SHA-1: 0d5be5b63249422a7f41986bc1f8759f1348555d SHA-256: 0043f07b0ae6fb9f7e8df204b8b88a39c30f2efd411c6c8fe9b9ecbf3ac6b39b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text suggesting a lure related to 'persona 5 city wallpaper phone' and a URL that leads to a malicious redirector. This indicates an attempt to direct the user to malicious infrastructure, likely for further exploitation or phishing.

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.link/wix?keyword=persona+5+city+wallpaper+phone
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://565baecc-2e82-4c52-84cd-9ce16a4d3eae.filesusr.com/ugd/1e533a_df2025f12a0241d69070ec06398c9335.pdf?index=true
    • https://f0549f06-1fdb-462c-a069-44de3407d7ff.filesusr.com/ugd/a4c1fa_41498384d2784b7a87ef7849aae07a74.pdf?index=true
    • https://7aa01d7c-7002-44fc-b4fe-2aee3bb5d38d.filesusr.com/ugd/04e6f9_c3fd0f73a2ea4499886edd22fd3dab48.pdf?index=true
    • https://bd5dea40-3ba5-4a0e-9fe6-f2efa0c502ce.filesusr.com/ugd/ae059d_3d476c73168b4ffaacf966e6d25fb0d1.pdf?index=true
    • https://8af56760-9ee7-4ab2-9814-44ec45e3b986.filesusr.com/ugd/5ea691_27fe9f74a16a4fb8ac859b9863c1f759.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/55295186796.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/scott_mccloud_understanding_comics.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/bexuzedevodibafidilisavev.pdf
    • https://c396b391-dba2-4f75-8967-9e41395764f7.filesusr.com/ugd/a2e20a_c067500eddce4b47abd369aa918645b7.pdf?index=true
    • https://76240503-bba4-4b53-81c0-e198561a6b5f.filesusr.com/ugd/70e5f7_ef14b8361ff94421aa07db5070ef47ae.pdf?index=true
    • https://8bfc9bd4-7a29-48d6-9a5b-b6a6b0034151.filesusr.com/ugd/de3d83_c3aeb073276b408d85208396c24308ff.pdf?index=true
    • https://0bdf4a0f-fc0b-46bb-b34b-422ccd9e2d16.filesusr.com/ugd/8ff694_732983d526df4bdd94539f247261f0a2.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/wetujizi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0187/1512/files/79637268454.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/6861868488.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_off00005f03.bin
164e2076721fd7dc9d246e312059e301726739b281b8ac5939d1af105fefd5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F03 5340 bytes
font_01_sfnt_off0000713e.bin
97544801449049e1e7b6925b159dcb8bab98f9ad425eff8d827174adf3831499		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713E 10032 bytes

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