Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a65ad0a7835d7e…

MALICIOUS

PDF

48.6 KB Created: 2020-08-31 06:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f10192e4dec323bdb88f1386e6315531 SHA-1: 8326bdc919e8c829923cd9d8e380bdf0c9f7145a SHA-256: e2a65ad0a7835d7e49c7a9998df3f920501f3067a5215bfa5d57bccbb150285d
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a link to a known redirector, ttraff.com. This suggests the document's primary purpose is to redirect users to a potentially harmful site. The ML classifier strongly supports this assessment. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of the specific lure.

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/wix?keyword=potassium+permanganate+react+with+oxalic+acid
    • https://static.usrfiles.com/ugd/b8c837_5eec4bbe028b4a24be489570cf5eb964.pdf
    • https://static.usrfiles.com/ugd/921909_d6b233f839604d2eb131b2078db86924.pdf
    • https://static.usrfiles.com/ugd/64f9d2_f6f302759f8644849b26bf002e225b45.pdf
    • https://static.usrfiles.com/ugd/e02969_fa3d22c430fe40fc96a6f589af4d1f56.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/badinerie_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/joindre_fichier_messenger.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/96719169361.pdf
    • https://cdn.shopify.com/s/files/1/0437/7814/6462/files/tibutetufugixalakuniw.pdf
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/52317090090.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/giwiwiba.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d01076753b64e8cb95bf33bb589692f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7110c20f72341d9a60270351c8b1b8c.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_off00007e7d.bin
8852463ad133ee950404d21cf61b6cd43fac1d5c9fe0da83f8468d3efbf3cfd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7D 5648 bytes
font_01_sfnt_off0000919b.bin
0dedd7fdafbef851a74bbaac6e627c11e15b83a1d89c181f325b8a56df92e8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919B 10540 bytes

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