Malicious PDF — malware analysis report

Static analysis result for SHA-256 188076ea87663001…

MALICIOUS

PDF

84.8 KB Created: 2020-12-16 14:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 364a6c2dcdb9a7db6c899cea3e0942ec SHA-1: 93c89d8e480dd15c15e1c325906f1ec44bbc951e SHA-256: 188076ea8766300187c1eb191e2077ca43dc4d5fa13a2f5dd54dbe91b089030a
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to distribute further malware. No scripts were extracted, but the presence of numerous links suggests an attempt to lure users to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gettraff.ru/123?utm_term=unanimous+consent+agreement+example In PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/gowiseka.pdfIn PDF document text
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/7e1f293241.pdfIn PDF document text
    • https://jowesezowu.weebly.com/uploads/1/3/4/3/134366841/guwilejowibo.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/9e2320b18b902.pdfIn PDF document text
    • https://kibutudevitage.weebly.com/uploads/1/3/4/4/134499349/9638327.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/mutonurunav.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/linoguwek_zilutevobop_bufino_xetapesivup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5d1f60a2757459b04aa97/t/5fd1287aa2f0bc19cc4d225e/1607542907053/anime_avatar_creator_games.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/best_cover_letter_resume_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cb0188c99b6d37c032fb/t/5fc5c7ab7acac6192a8a54ec/1606797227967/cheep_cheep_mario.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd160c4f07da69d6423aac/1606227476326/exception_processing_message_0xc000007b_parameters_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/mission_impossible_6_parents_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fa26e2fce462bc8c54f9/t/5fcefeed7cc0b10a0ac6e9d2/1607401200788/fox_news_live_stream_usa_123.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/sola_virtus_nobilitat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc525a9e2fce462bca77587/t/5fc94bb597a6c26aa4d489d1/1607027639508/ecumenical_daily_appointment_planner_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/39623664431.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd15cc6cddda09e8509164/1606227405582/wedipewetabuzofuganosefe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA1 5312 bytes
SHA-256: 56450e646bc21a480db5b475d8db92166b8dca12eec8f2a2de7f05385bf51156
font_01_sfnt_off000111a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A5 10972 bytes
SHA-256: a469f8c59b30b478563f4dee02817b836a516970462dd51ae8c5ac652a32ec96
font_02_sfnt_off000136ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136ED 6084 bytes
SHA-256: 0c3766dce408445f50e904d652c9326647873efe4fb22fffa238fb744f3c79a9

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