Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed56df2ecf3e4685…

MALICIOUS

PDF

33.9 KB Created: 2020-08-20 04:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40999239971854f94cfb84b550477a03 SHA-1: 04a5f320e2d77941947f60a85df279dc64946f0d SHA-256: ed56df2ecf3e4685f2e6b2f045c4425151e44fff23e03426464c068348545bd2
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm containing numerous external PDF links. One of these links, https://ttraff.com/pify?keyword=sentence+fragment+and+run+on+worksheet, directs to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. No scripts were extracted from this sample.

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.com/pify?keyword=sentence+fragment+and+run+on+worksheet
    • http://gijid.qldphilconsulate.com/uploads/1/3/0/8/130814526/dibowuzonivapaw-dafidaloxozago-magowunapato.pdf
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/hypertension_guideline__facebook.pdf
    • https://cdn.shopify.com/s/files/1/0436/7102/7865/files/litres_to_gallons.pdf
    • https://cdn.shopify.com/s/files/1/0446/6245/6483/files/adjetivos_posesivos_en_ingles_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/award_certificate_template_printable_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/android_4._4._2_delete_google_account.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/sopopimitonudabejuwovuwov.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/graphic_design_book_in.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/grandstream_ucm6510_ip_pbx_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/1688217149.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_off00004872.bin
462e61ec1cc9dae41a84fb04e2d504ac18041b730bbda9d9ea36b77c46071417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4872 5660 bytes
font_01_sfnt_off00005b98.bin
166405f30b18fa38180adea731f9039d2e466c7c8f0e531312e60a4606083973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 9304 bytes

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