Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef5da1fa5e9b519…

MALICIOUS

PDF

33.1 KB Created: 2020-08-04 02:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfa4bc8e2a9218a8283256d05d7831c9 SHA-1: 096ea39a5999b016095f102bf9ea5e231b7616ea SHA-256: 4ef5da1fa5e9b5193e8492a0556495051ba28f9d08645ccbf24846e09a124e63
130 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The presence of a 'download button' heuristic and the embedded URL further support a social engineering attack. The primary malicious URL is https://ttraff.cc/pify?keyword=arabya+rajani+comics+pdf, which likely serves as a gateway to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=arabya+rajani+comics+pdf
    • http://files.haciendasonoma.com/uploads/1/3/2/7/132740218/7130198.pdf
    • http://files.bottineaubaseball.com/uploads/1/3/1/4/131452938/ronelexobefule.pdf
    • http://files.imagine2020expo.com/uploads/1/3/0/8/130874097/19aee.pdf
    • http://files.michaeljmorris.co/uploads/1/3/0/8/130874143/rabimupulumisasijawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/53523442413.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/how_full_is_your_bucket.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/lodezirinopepopunexip.pdf
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/gasuniloku.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fesofanegasovazexuna.pdf
    • https://cdn.shopify.com/s/files/1/0440/6237/6101/files/risabonetegiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bolaxoxumilelunogaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/11196045826.pdf
    • https://cdn.shopify.com/s/files/1/0431/9756/3037/files/33187169250.pdf
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/3371703179.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/majepazizobikigat.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_off0000445b.bin
324ba5ef68973adbdd465c9279fbfb59962a5bdfc9d38bb4885ff46b8e6fd117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x445B 5576 bytes
font_01_sfnt_off00005744.bin
bc8f246e9bbbbc741cc18fcc5ac7a4c452d0399966ce82ccf805ad5b1fe78917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5744 9524 bytes

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