Malicious PDF — malware analysis report

Static analysis result for SHA-256 921f4f2a0b6af0ec…

MALICIOUS

PDF

36.9 KB Created: 2020-08-31 11:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e90e20b004634be36645e4365faaa37 SHA-1: 2c28a5214e6dd2782ba40bd2b7482b4101520749 SHA-256: 921f4f2a0b6af0ecec35cccf692722b1aeb8d4128c46b47e3f0f317496f8bf21
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a PDF link farm, with many links pointing to Shopify domains. The document body, though heavily obfuscated, contains text related to a '2013 accord sport service manual', suggesting a lure to trick users into clicking the malicious links.

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.com/wix?keyword=2013+accord+sport+service+manual
    • https://cdn.shopify.com/s/files/1/0460/2534/3135/files/kibedobikum.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/mevefegotanezoxawipep.pdf
    • https://cdn.shopify.com/s/files/1/0437/0795/7400/files/25642946109.pdf
    • https://static.usrfiles.com/ugd/5be868_56b72a3631d94827bbe18f4f47ffac7b.pdf
    • https://static.usrfiles.com/ugd/b9801a_7529baa446824ed88ba2e286f2c3b84e.pdf
    • https://static.usrfiles.com/ugd/33a16d_ac92ba2149414e48a4e7efa3c464e895.pdf
    • https://static.usrfiles.com/ugd/a4d998_944a45045b1d442198f243c7f773d0db.pdf
    • https://static.usrfiles.com/ugd/b8c837_614345f4df674ab5bdd4266c150813d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_32b88497fe0d4453ae700cd695b252f5.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/3352161385.pdf
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/the_short_oxford_history_of_english_literature_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/aprender_portugues_1_carla_oliveira.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/mavenovesujuzu.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_off00004f76.bin
c750d8f2b281dc02d6870480c09d3d6eb9fe7a37349c5f33491c174d6f235a60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F76 5676 bytes
font_01_sfnt_off0000629b.bin
ade948708670d65dfaf86df16988e75c7b45402e3a253e208912a2de9017a22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629B 10712 bytes

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