Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d50fd285ce9145…

MALICIOUS

PDF

93.0 KB Created: 2020-08-30 12:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 741fdc15a7acb03c1b57beff47b5151e SHA-1: 302456b926b9a1e86e8fdb96944bb2a122d01832 SHA-256: d4d50fd285ce91452b276315ea5afe2d7687505f85cc3605810fb947b908c646
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 the presence of numerous external links, a technique often used for SEO poisoning or to direct users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.link/wix?keyword=grateful+dead+members. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure. The file's purpose is likely to redirect users to a phishing or malware-hosting site.

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.link/wix?keyword=grateful+dead+members
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/80262317036.pdf
    • https://cdn.shopify.com/s/files/1/0466/7985/1173/files/airlift_movie_ringtone_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/anorexia_fisiologica_infantil.pdf
    • https://cdn.shopify.com/s/files/1/0435/6246/7489/files/40413771474.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/54149263511.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/bidebimax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0453/5307/4843/files/english_malayalam_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/ayuntamiento_valencia_informacion_urbanistica.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/aarp_membership_renewal_free_gifts.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/mijeviluzaka.pdf
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/xufovaxewalaw.pdf
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/31371718966.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_off00013018.bin
26b95ac7a2e5ce042ccc303625164a852e2cf0655c37f182c0b14bb0fa2b01e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13018 5224 bytes
font_01_sfnt_off000141c4.bin
b8e82a8154f527fe4b66b37499eb51063af424912587a74e8d7220fac08a12cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141C4 10780 bytes

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