Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ff25393c7a36d8…

MALICIOUS

PDF

32.8 KB Created: 2020-08-04 18:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 881faf4417f52a951d2f139fe29ae20f SHA-1: e8b850086f1adb7651f64ad1c346c67e576101df SHA-256: 42ff25393c7a36d85ba6cf4cafa91a12501050f816af8b9a29100c7cdf8a2933
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body text and embedded links suggest a lure for a book download, which is a common social engineering tactic. The primary malicious IOC is the redirector URL, which likely leads 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=aro+mate+orientation+book+pdf
    • http://files.kenttreeservices.com/uploads/1/3/1/4/131409463/volobizubusilir_toves_gowokavelut_gebijawigi.pdf
    • http://files.katherinemgjones.com/uploads/1/3/2/7/132740285/muteviregeda.pdf
    • http://files.animalclinicofchardon.preview.pethealthnetworkpro.com/uploads/1/3/0/8/130815213/wivijegubexizo.pdf
    • http://files.womenfindinggrace.com/uploads/1/3/1/3/131398507/29c72ec6.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/alter_ego_2_cahier_d_activits_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/kisopatoroseguwapak.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/zolewibawixod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/tekemoguluwosu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/21000548879.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/dinofevetadewasabigibog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/99473088146.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3024/files/50636393309.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
    • https://cdn.shopify.com/s/files/1/0433/6582/6719/files/82297352043.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/zurolojagitovarevib.pdf
    • https://cdn.shopify.com/s/files/1/0437/3708/8154/files/mejijevu.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_off00004708.bin
937532a7f8fe5b56d10ff614409b4c4dca7562c6f87d126bf9d8b92700062aec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4708 5172 bytes
font_01_sfnt_off00005885.bin
294ab6aa1d1e4c901ce4edbc63cf7bf752bd6ce6248d38b5312350c8c13b2cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5885 8852 bytes

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