Malicious PDF — malware analysis report

Static analysis result for SHA-256 2794d8ef1c208e8a…

MALICIOUS

PDF

47.4 KB Created: 2020-08-05 16:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ed7520f68fa92f8335c5599244015b8 SHA-1: 515ac28b4fdcc799c035d801eaa90922c13fe169 SHA-256: 2794d8ef1c208e8acfb971db44d5f9e691cf26820caf17693d1a307bff2e60ad
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure related to an 'Anthropology research paper pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious 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.cc/pify?keyword=anthropology+research+paper+pdf
    • http://files.jmarieeventsmyd.com/uploads/1/3/2/6/132682204/vazunibivenikax-dofapivojifub.pdf
    • http://files.music-apps-for-musicians-and-music-teachers.com/uploads/1/3/1/6/131636748/rixonalajojisifufo.pdf
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.pdf
    • http://files.fxlda.com/uploads/1/3/0/7/130775134/sifuvejanu_tokuv_sibufuzunoroki_misiwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/60149759994.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/turivuvimijazubifezu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/tuvezo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/josonap.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/lusowawegogotazibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/munofetonak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/rofutorab.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/lisafubemina.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/sezedomokukumabi.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_off00007aa2.bin
b802b0c5f21536e2614f5cc897c3388d21bcc72a8a0163a613e232d7ca7add5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA2 5508 bytes
font_01_sfnt_off00008d66.bin
1f8f57c7ec6bcadf2fcff936101d7c660a5ecaf317dd8563872000f7712b455d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D66 10508 bytes

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