Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6539f62aeb84cf6…

MALICIOUS

PDF

50.7 KB Created: 2020-08-28 01:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88d795e14614d16c97829a2f85f6fb8b SHA-1: 3c122f848a8729b66921a352d726c760e9e79475 SHA-256: f6539f62aeb84cf6e411160b451e5b3b978718dfccaa3801240315c54beec6c4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is ttraff.com, which is used to redirect to other content. The document body itself appears to be largely obfuscated or contains minimal readable text, but the presence of the malicious URL and the link farm structure strongly suggest a malicious intent, likely related to SEO poisoning or redirecting users to further malicious sites.

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=adiemus+karl+jenkins+song+of+tears+c
    • http://mepeduwe.myveganmorocco.com/uploads/1/3/1/4/131453384/jewavabizuxebagi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/vukagajunizitewom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/nawufiwidaridetuzegozerab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/onn_cd_mini_stereo_system.pdf
    • https://cdn.shopify.com/s/files/1/0454/5180/4824/files/oxford_advanced_learner_s_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/dujerewani.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/julalodonuxetaxotuxekizix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/brandt_daroff_exercise_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/sunetabejuvofus.pdf
    • https://cdn.shopify.com/s/files/1/0464/7298/6774/files/fudexo.pdf
    • https://cdn.shopify.com/s/files/1/0449/5910/5192/files/pdf_file_merger.pdf
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/451199649.pdf
    • https://cdn.shopify.com/s/files/1/0465/0598/4158/files/tamil_christian_songs_neeye_nirantharam.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/english_speaking_course_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/8236937693.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079aa.bin
4ff43b5257cc04d7665d53bab90ab06b99f3706496e232fc421a1847986cf52b
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 5352 bytes
font_01_sfnt_off00008bc6.bin
393f294a89dd4ec68c3b9e310f69cda3c2864c80d348297a3f0053700e794e80
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC6 10516 bytes
font_02_sfnt_off0000afb6.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB6 4324 bytes