Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb83272b650b3d38…

MALICIOUS

PDF

48.1 KB Created: 2020-07-23 17:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50dadaef614307c90bdb8f2ead6f1962 SHA-1: e1927801bf964cb6142f0018c97e7ce78ff84cff SHA-256: bb83272b650b3d38c82cba2a6e437bb2b05749806525ae6f77a78d5f6a120928
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is flagged as malicious. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The presence of a 'Download' button lure further supports a malicious intent to redirect users to potentially harmful 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.ru/wb?keyword=social%20media%20trends%202020%20pdf
    • http://files.longocreative.com/uploads/1/3/2/8/132814337/0e8b3741.pdf
    • http://files.diamondpta.com/uploads/1/3/0/7/130739986/657d5ade9983.pdf
    • http://files.dangshades.com/uploads/1/3/2/7/132740525/9664484.pdf
    • http://files.edwardvisualart.com/uploads/1/3/2/6/132695732/gosojajakizap_rekigunukug.pdf
    • http://files.ericeklecoaching.com/uploads/1/3/2/6/132695418/1055071.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/76411264677.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/kopofoxapusibalozufin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/72309047559.pdf
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/61281072713.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/molujivesal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76685421079.pdf
    • https://cdn.shopify.com/s/files/1/0431/3700/7778/files/zolimefegomovis.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/33735718285.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/73182680555.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/wuxidefival.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/medojujamazut.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/wepomebox.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/32911439947.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/65662863018.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_off00007e2a.bin
6b918ad5e701eefeaf89e65f1829c1b0386feefccc9f6edbeb02ed94b7d91ab3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2A 5464 bytes
font_01_sfnt_off00009090.bin
28aa6f69bf7d0c5c80918dee073fcc5a346219d07872794338526c56ac040f30
pdf-font-stream PDF embedded font (sfnt) at offset 0x9090 10192 bytes