Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d42382f3e564ae4…

MALICIOUS

PDF

43.7 KB Created: 2020-09-01 02:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47a71e50583b0dd99dc45fd0a06769d2 SHA-1: b9efbde8fd80a3bf20ef6cae325903d92f926c14 SHA-256: 9d42382f3e564ae465ed92418b043c8292cd2f9a26596e9e24a8521f2286c1a7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the redirector URL, suggesting the intent is to lure the user to malicious content. No scripts were extracted from this sample.

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.cc/wix?keyword=types+of+plain+carbon+steel+pdf
    • https://static.usrfiles.com/ugd/b8c837_3d7decd2b1cc4cf390df266a4601fc14.pdf
    • https://static.usrfiles.com/ugd/f84671_7091b357aa194d40af9f30533656005b.pdf
    • https://static.usrfiles.com/ugd/89363e_c84eeebe11cd4c0ba76b762446e877d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f9a8776b2b6404994a48ea1ae0a31d8.pdf
    • https://static.usrfiles.com/ugd/162fe6_86041eb0af944004b2d881595b9dfe3a.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4446/files/29435126920.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/dusogudavekokofixipubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6473/files/mile_high_club_porn.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/dowaxotukadabe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4168/3618/files/dugogadevafabife.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/ap_biology_campbell_8th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/5005/5318/files/japan_travel_guide_blogger.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/23865493825.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/galetetinebuvozefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/kanedapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/being_charlie_full_movie_free.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_off00006e95.bin
817008c0b4ae0ab586b7c1c032e1603b73b3922bd941d1e4d1d08a6058cee91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 5340 bytes
font_01_sfnt_off000080cb.bin
a3a3d84714aeeb20dafcd3a0b29d2faa20e46c2c8c7fc96e7bd159b3bc78e90c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80CB 9784 bytes

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