Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3f37ea3331f7e0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-30 18:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45ac7ac52390cb63d077fefd9b2d9aa3 SHA-1: 4123074550e3954ee4768ec85be6a3189e40a147 SHA-256: ff3f37ea3331f7e0d14d018304578ccf1fada33c060482d41591eded236be67d
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive title and numerous links, including one pointing to a known malicious redirector. The primary malicious link, 'https://ttraff.ru/wix?keyword=how+to+download+giphy+gifs+to+your+computer', is designed to lure users to a malicious site. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility and traffic to malicious destinations.

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.ru/wix?keyword=how+to+download+giphy+gifs+to+your+computer
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/anti_bastos_law.pdf
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/soil_ph_for_plants_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/wobizi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/jekurisusog.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/2406679704.pdf
    • https://static.usrfiles.com/ugd/5be868_e8c083bcb74744708eeb61c3dbdaad6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_892a9f32df13495b9abec32675d6c7e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_5444f467fc5a44e5adaaa0d161119b7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_da1b1a8103a14a45aa0ef5dd491053d8.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/17833506018.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/byte_array_to_bitmap_xamarin_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/actualizar_foto_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/wuzatulofasuge.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_off00005ba9.bin
78e0a1f7e485153589ddd5def94c45b8419ab151b5b469f5ffe7d42c0edebb9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA9 5724 bytes
font_01_sfnt_off00006f0c.bin
c075dc2bd945ab76a258977c590ba71e82331376ad92aa07f66acc7e3ca7d43b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0C 10060 bytes

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