Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e29fde72c6eea6c…

MALICIOUS

PDF

42.7 KB Created: 2020-08-16 22:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bdb861414d0cec162a29c0037f51464 SHA-1: b48fbcc6c497386ab7df04af22d413657002f2d5 SHA-256: 2e29fde72c6eea6c19ff7b81657527e837522c4bd6bbcea4370ec627b996cee9
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM' and another flagging a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. This suggests the primary purpose is to lure users into clicking malicious links, likely for phishing or malware distribution.

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=guided+meditation+script+for+stress+relief
    • http://files.fulbrightinfinland.com/uploads/1/3/0/8/130813325/9035749.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/soxatedotexasepepuxutidum.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/aspiration_pneumonitis_and_aspiration_pneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/dogugosumeziwizexovok.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/sonuvexiduriwegoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/5510079737.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/barzanji_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/ninibuvotefozog.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/watusi_ios_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/5th_grade_math_curriculum.pdf
    • https://cdn.shopify.com/s/files/1/0432/8344/7968/files/nurisojuvitojetezudatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/self_made_album_zip_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc0.bin
394e5d8ed146a5018d4161ecb3e19ec7f3b00154b2324a03115b7a75f91886d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC0 5332 bytes
font_01_sfnt_off00007dc6.bin
5e3ee7fe1b9d52d1e7a512e818a4ae3d849eb5d8d704da676b4e9b13327612b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC6 9308 bytes

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