Malicious PDF — malware analysis report

Static analysis result for SHA-256 e304d6a1eda45437…

MALICIOUS

PDF

44.6 KB Created: 2020-09-01 02:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e93ac725559ff116c3efe0d6ccf5135 SHA-1: 72cadaea4066cd35d1105e73ebc51ee629c4378d SHA-256: e304d6a1eda45437be794b99f4aba47fb5125daa5de21720e8f8abfb409c4282
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/wix?keyword=lotro+beorning+guide+2017', is identified as a malicious redirector. The document body itself appears to be obfuscated or corrupted, but the presence of the malicious link and the link farm structure strongly suggest a malicious intent, likely to redirect users to harmful content.

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=lotro+beorning+guide+2017
    • https://static.usrfiles.com/ugd/69695d_d9160acdb458445c85e21ab84de0b1c0.pdf
    • https://static.usrfiles.com/ugd/7f16bd_825a5479be5f42439f09ae473357f9d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a80c0ebfd5764bcf99e48ae847716463.pdf
    • https://static.usrfiles.com/ugd/60933b_90a4b20d415c4ad0a216df7b38692efa.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e7e3e65401943a5aa08e868718d254c.pdf
    • https://static.usrfiles.com/ugd/067ecb_9892f7e5a289472eb0938e0204c6250d.pdf
    • https://static.usrfiles.com/ugd/cac9e4_22ca4fb1ebe74709adfb008be39d99d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_73daf6eedb194cbd8b3cb8b716708dee.pdf
    • https://static.usrfiles.com/ugd/756799_0e71fe84fca54fe1bbe06f943b399b7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8873021ca7949f9a9aab3c01abd3296.pdf
    • https://static.usrfiles.com/ugd/2e16aa_d2ee8a1bbffc4eae97bceeec919edc12.pdf
    • https://static.usrfiles.com/ugd/b85eb0_1b7e8f3118234217b1f8497bd82a5c5d.pdf
    • https://static.usrfiles.com/ugd/8b97dd_e3f3cab79fc343699a8f965e73f21ce0.pdf
    • https://static.usrfiles.com/ugd/1f5cef_904e333cd92d4ae9a8472ce9634d5e93.pdf
    • https://static.usrfiles.com/ugd/2ac701_9c82a53d1c714f2299cd5a7f8c2b8643.pdf
    • https://static.usrfiles.com/ugd/739437_25146d6b84754ac6864e99a037f9cab9.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_off0000713a.bin
50fcde12aad43c41f38583526e35369b91ca8deaf7d075e628c24fe6b9a010c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 5060 bytes
font_01_sfnt_off00008291.bin
fece67e90c5fd0c2143715225a948b6df94cc4a00d96492d8c4c1276167f263f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8291 10304 bytes

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