Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecc8a1c6b4bc86f…

MALICIOUS

PDF

37.0 KB Created: 2020-08-11 18:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e6daa6bb33b1c7807cbc5b1c509aa08 SHA-1: 4faf76e10a80e498608e73620ddbce4bca85e080 SHA-256: aecc8a1c6b4bc86f3f7c403033c1e9bb0a4af70c009424ea6f9f650cad1f4631
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a lure to a malicious site. The document body text and embedded URLs suggest a social engineering attempt to trick users into downloading a 'free book'. 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.com/pify?keyword=getting+there+a+book+of+mentors+free+pdf+download
    • http://noneruf.fbctitusville.org/uploads/1/3/1/8/131857334/3021f1f7d0622c4.pdf
    • http://files.joanruthlim.com/uploads/1/3/0/9/130969704/vutofogoxu_jokesixa_nopexirur_sowapizumuwamek.pdf
    • http://puzisokav.veevabangadanceclass.com/uploads/1/3/1/4/131483200/bomepire.pdf
    • http://files.oakbayband.com/uploads/1/3/0/8/130873932/wejusa.pdf
    • http://files.wildthistlejewelry.com/uploads/1/3/1/0/131070529/8887028.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/zibuzovibekixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/zunazanuvitenejodet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/mebibazurokebutexoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6124/files/kujomakuruja.pdf
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/60757662228.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/jasuxefedemes.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/madafob.pdf
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/wiledosisujug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63016720996.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_off0000523e.bin
610bf90618b5f8f6e05d57f1c9bc79a3ade8bf98e74dbba7c5fc71fa3132fa43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523E 5780 bytes
font_01_sfnt_off000065cd.bin
fd136fae04bf47ec80ec0981c88feea56ec405413a104e89994ff381fe42917d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CD 9628 bytes

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