Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce52e6d03a9ef36…

MALICIOUS

PDF

51.4 KB Created: 2020-08-31 04:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a646f16becbf015d0a17d54c8a4116e6 SHA-1: 86322832b852348260f7bd52fd751eec9dde502f SHA-256: 1ce52e6d03a9ef366fef64fb98fc61e0b5bcd33a3f7eb6d02eaa87e842505214
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a game guide. This heuristic firing indicates the document's primary purpose is to redirect the user to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external documents, likely for SEO manipulation or to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=kingdom+hearts+1.5+remix+level+guide
    • https://static.usrfiles.com/ugd/5b9a87_602125f6e254408c9a638c0df630b1e4.pdf
    • https://static.usrfiles.com/ugd/2813e2_90a0fb465c8742ee8f64e22657d1bef1.pdf
    • https://static.usrfiles.com/ugd/5926b4_7b34a6b8d1904161b4c796ce86be3eaa.pdf
    • https://static.usrfiles.com/ugd/b8c837_20e37c5d833c42aeb7bbb095db66a8da.pdf
    • https://static.usrfiles.com/ugd/3bca44_9821432dd85f49fbae7d1b71af1be902.pdf
    • https://static.usrfiles.com/ugd/b8c837_265a730817ca492ea2ea61f626ffaf0f.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/wugenobufubofutewesulas.pdf
    • https://cdn.shopify.com/s/files/1/0436/1083/3058/files/acromioclavicular_joint_pain.pdf
    • https://cdn.shopify.com/s/files/1/0437/8119/3877/files/19791183775.pdf
    • https://static.usrfiles.com/ugd/f09a9d_e70ff9a138ac48dba9fd3a20e4671a47.pdf
    • https://static.usrfiles.com/ugd/136d07_c6c08da763ed46348a42ea3507a33297.pdf
    • https://static.usrfiles.com/ugd/5b9a87_7d47617b85064331a6d6649c20b41637.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000675d.bin
7a3fb736b6f3e9d3513f1989269c7fd62c76c0e8cc0ba555bc7d148c7c3cd005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675D 5428 bytes
font_01_sfnt_off000079ac.bin
0841a70932194f867b9a8725953ab96de7f295973cf8a0e6310170d1a8396df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 7908 bytes
font_02_sfnt_off00008f99.bin
ca832f8e9bb810f5f65efcd4d451eb7252af5002a52f50f2ee345cf4bc31f6d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F99 10132 bytes
font_03_sfnt_off0000b229.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB229 4324 bytes

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