Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e737fd60eea319…

MALICIOUS

PDF

46.2 KB Created: 2020-08-23 13:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c492ea75c0a118cbac656afe15f819 SHA-1: 8b44ca1c3db8890f6f6d39047dec53de9969a0f9 SHA-256: b3e737fd60eea31974bf6ae08f4fa9c0bcfcd472bae125f5f1639d811135f5dc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=wolverine+access+time+reporting'. This suggests the document is designed to redirect users to malicious sites. The presence of a link farm further supports this, as it's a common technique to obscure the final malicious destination.

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=wolverine+access+time+reporting
    • http://files.aileenfletcher.com/uploads/1/3/1/6/131606262/xetizogeka_didaxu.pdf
    • http://sitod.therighttouchpainting1.com/uploads/1/3/0/7/130740387/tesokofamaz-viwejik.pdf
    • http://files.nathannegri.com/uploads/1/3/1/4/131453943/faxovalewaf.pdf
    • http://files.fantasygolfkings.com/uploads/1/3/1/4/131438439/dorufa-dufivenimemoboz-junuvijo-samadi.pdf
    • http://files.cjbeagle.com/uploads/1/3/2/3/132303023/xuzowad_jenuso_bijasokatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4072/6427/files/yoga_poses_for_back_pain.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/wudot.pdf
    • https://cdn.shopify.com/s/files/1/0464/5971/5752/files/cinestyle_lut_premiere_pro.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/c_o_kancharapalem_naa_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/32764314742.pdf
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/vefude.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/longman_academic_writing_series_4_paragraphs_to_essays.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/salvage_pathway_of_pyrimidine_synthesis.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/75733146489.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/articles_practice_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/8818/3447/files/23019422355.pdf
    • https://cdn.shopify.com/s/files/1/0461/9154/2423/files/57342684001.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_off00006bf6.bin
111f5a406279cf123c3ae1e1f197ac687bca7da11ba1ad434e220550c57109cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF6 5324 bytes
font_01_sfnt_off00007e0d.bin
9a89c5cb901f83a0faa86d252b11ef74bc1dcd97e466c9b68e2f96e8d759148a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 14728 bytes