Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5504f0734547dfe…

MALICIOUS

PDF

53.0 KB Created: 2020-08-03 21:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40ebbbf1e59fd634835cc9d97cf38710 SHA-1: 4079753959ec9d04c3d6af5052c7e66f1703ebfe SHA-256: e5504f0734547dfec1284f89a9262e4d4e826697ae501fb9ff4c0edc6921ac3b
120 Risk Score

Malware Insights

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

The PDF file contains a lure for "Java design patterns tutorial pdf" and embeds a link that redirects to a known malicious URL (https://ttraff.cc/pify?keyword=java+design+patterns+tutorial+point+pdf). This indicates a phishing or redirection attack. The file also contains a mass external PDF link farm, suggesting SEO poisoning or a similar technique to distribute 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=java+design+patterns+tutorial+point+pdf
    • http://files.auntyjoys.com/uploads/1/3/0/9/130969572/6b9f518f2b.pdf
    • http://zetidukun.interfaithweddingrabbi.net/uploads/1/3/1/6/131636655/poxuwipakimijilamid.pdf
    • http://files.greenrivermwc.com/uploads/1/3/0/9/130969939/bawezugu.pdf
    • http://files.markmanley.com/uploads/1/3/0/7/130738719/vesagenezije-nidasorarobu-kinowogi.pdf
    • http://files.evergreendirect.com/uploads/1/3/1/4/131483830/naxijepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/74765338070.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/36511106683.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/kujefitanimovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/miwibosapod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/39652290542.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/nudojewenepodijotuxigadol.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/11708533423.pdf
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/15339782291.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/89062062392.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/41156018367.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_off0000928f.bin
d05bc5c3c9ff52dd76c13d0d5ae68eb4a2e51ccce20546cea5fc37fc02defc78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x928F 5256 bytes
font_01_sfnt_off0000a48d.bin
d87b017d31c9694d2fee284afccead7a235c05be4a0a772b23cbba69db482608		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA48D 10192 bytes

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