Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afc32d2890b6823…

MALICIOUS

PDF

64.2 KB Created: 2020-09-13 13:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8032039731d6ef75062e25b4ebf9422 SHA-1: 562d0d9e110a894b14756f987b213f54772d72a6 SHA-256: 0afc32d2890b682372fd895d478e134d7371357f00239b0fc58130a05356a59e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'best guitar controller for clone hero' and includes the malicious URL. The presence of a link farm suggests an attempt to generate traffic or distribute malicious content through SEO manipulation. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.club/pify?keyword=best+guitar+controller+for+clone+hero
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/fajufulonesafebikoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/papomesutomode.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/hemisferios_del_cerebro_humano.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/mezidix.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4338/files/volvo_bus_simulator_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0450/0901/0852/files/netosatizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/free_printable_spelling_worksheets_for_year_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/72861542640.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6040/3103/files/52795473410.pdf
    • https://cdn.shopify.com/s/files/1/0436/9940/4965/files/mudadezanapu.pdf
    • https://static.usrfiles.com/ugd/80c1db_11530d16349c43bf992f4b533769bca7.pdf
    • https://static.usrfiles.com/ugd/740d8c_0c24ece83da4423c95d7c0ac9db6cb09.pdf
    • https://static.usrfiles.com/ugd/74147a_17fb50915ae943eb973be500bfc516a8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b43b.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB43B 2828 bytes
font_01_sfnt_off0000be36.bin
46149369b416f0c3e1d4ca6ef3e7d3c20b97c4f78d7156423227c57c58a037a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE36 5192 bytes
font_02_sfnt_off0000cfe4.bin
7687431f2a96363c1459b8a8388cfa5980ecf67a9ba015c10495f82f8486939a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE4 10364 bytes

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