Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5961500224322b…

MALICIOUS

PDF

49.4 KB Created: 2020-08-05 15:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4467235c53e8b8d58e1c213447653ce1 SHA-1: ba86af75dd7b5659e445363c95b910b0cdc44def SHA-256: fe5961500224322b5ddea2e4f8246748681743540a5f9d414f2e09f9251d768f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. The document body also contains a call-to-action phrase, suggesting a lure to encourage clicks on these links. No scripts were extracted, limiting further analysis of the payload.

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/wb?keyword=sscn%202019%20pdf
    • http://files.saearkansas.com/uploads/1/3/1/4/131483197/falapuz.pdf
    • http://files.region15daylily.org/uploads/1/3/0/7/130776081/b86f160c.pdf
    • http://files.cocoarmadio.com/uploads/1/3/2/6/132696214/789508871b158.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/xoliderukafupoburodinapav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/nigger_minecraft_skin.pdf
    • https://cdn.shopify.com/s/files/1/0439/8091/4846/files/mapenufurufanabifupazugor.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/kaguzoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8613/files/61831945713.pdf
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/lyrical_ballads.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/zawepapafasemexixisiwonir.pdf
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/fefonirowepozove.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/gumezikonejafadebilofit.pdf
    • https://cdn.shopify.com/s/files/1/0447/9270/9271/files/birmingham_barons_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/fury_warrior_bis.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/32069387225.pdf
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/hematology_atlas_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076ad.bin
47b515547dd08d12489bd7f530b6f3cb9400db04bc7d64a7bd2f632e08d8d0e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x76AD 4828 bytes
font_01_sfnt_off0000870a.bin
ca27281e137705b3eb835096075c7b48850402e0fc019eecd2c10fad119293ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x870A 10396 bytes
font_02_sfnt_off0000aa97.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA97 4324 bytes