Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bcfff44c9638cc…

MALICIOUS

PDF

47.3 KB Created: 2020-07-30 15:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b51180ba533bc163e07a70ded32c0500 SHA-1: a130148d994fa245b52ac1dece3bd1984d37e2fb SHA-256: 88bcfff44c9638cc67e602c32dc0138bab6b8def6090b8b60f23943cf06e1994
128 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a download for 'Roald Dahl enormous crocodile pdf'. This link, however, redirects to 'ttraff.cc', which is flagged as malicious redirector infrastructure. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The presence of urgency language further supports a phishing or social engineering attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=roald+dahl+enormous+crocodile+pdf
    • http://files.threeoakwinery.com/uploads/1/3/0/7/130776037/lekopu.pdf
    • http://files.wilmaderksen.com/uploads/1/3/1/4/131453818/mefiwu.pdf
    • http://files.communicartspeechpathology.com/uploads/1/3/1/4/131437702/rirexamovikumus.pdf
    • http://files.commu
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/gosepox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/wilamavobevuzib.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/viborojovexi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/soxewovima.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6936/files/22313320103.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/74051669182.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/vifanaxesebivutolavala.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/66923055322.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/68790158722.pdf
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/damareju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/kugez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xiwisabimetabif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6402/4479/files/43439989907.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_off00007c6c.bin
82f99ed6af4eaba12a3a147364205655d6db82e788d59532e71eebae9ccee1d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6C 5204 bytes
font_01_sfnt_off00008de1.bin
d112a3e170a9ad5cbbd94b0b5881f289948972b9bc2bac206ecfa7a29853a78a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE1 9996 bytes