Malicious PDF — malware analysis report

Static analysis result for SHA-256 2043d743fed90711…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 18:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e2a1948a63047873791ab5765b958db SHA-1: 80dedce1bccba76b0d09b95a6e6e824d92e9e6a6 SHA-256: 2043d743fed90711d706af9b12e60d207f634a493ed3f51a81f621c58b896268
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting the document is designed to manipulate search engine results or distribute further malicious content. The primary malicious IOC is the redirector URL.

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/wb?keyword=principles%20of%20uncertainty%20maira%20kalman%20pdf
    • http://zemuzovug.chest-messages.com/uploads/1/3/2/6/132680813/zajapexepelagumadoj.pdf
    • http://files.wandering-mom.com/uploads/1/3/0/7/130738700/dadojabujow_wivonivulinodus_kanese_dotuwu.pdf
    • http://files.laceytezino.com/uploads/1/3/1/4/131437619/9235d33df23.pdf
    • http://jivato.sarexplorer.com/uploads/1/3/0/7/130775918/939f14ee7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/59205362331.pdf
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/degorozonibu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4835/3442/files/91712441412.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/susukomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/gopimaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/somufedigok.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/vuxusujelupitogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/17014064157.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/xafoxararuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/debexutafagudapixadimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/36256432224.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/pioneer_avh_x2800bs_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/vojukigodax.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_off00007d47.bin
3e69f7bd9b7e323e87a06b1a2ed7110b17331f345417a6d31c2f683c18ab9bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D47 5468 bytes
font_01_sfnt_off00008fd3.bin
c109571fccaca8b90e14a44ca354d867c890731324f6b6a3a4c1773441515a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD3 10164 bytes

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