Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b707562d5599cc…

MALICIOUS

PDF

76.2 KB Created: 2021-03-11 03:26:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e02d09e208604535f971ff431e3e745c SHA-1: 57c113dde4beeabd21e531ff4151ed8755744e8c SHA-256: c1b707562d5599cccf4833ca6476069a7277ed304b566ba41dd9369b8d2e878e
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xajibur.ru/strik?utm_term=how+to+identify+dwarf+coconut+tree PDF link annotation
    • https://legorigerelok.weebly.com/uploads/1/3/6/0/136056749/0c1fd1db6c7200f.pdfIn PDF document text
    • https://mixunolonuwoja.weebly.com/uploads/1/3/0/9/130969204/wabasiraji-senesolegorol.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/3290217.pdfIn PDF document text
    • http://vafakewa.iblogger.org/garment_steamer_reviews_consumer_reports.pdfIn PDF document text
    • https://xaxiduxaze.weebly.com/uploads/1/3/5/3/135308656/05474f3117ff12.pdfIn PDF document text
    • http://guzowomofe.iblogger.org/27259368526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a6f18165-9bfd-46c9-8f51-0ab50cd0b687.filesusr.com/ugd/265c7a_188ce99b6cfd4dd2940b045b319223ef.pdf?index=trueIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_f2b0a5e676354d47bdcd819d1110febb.pdf?index=trueIn PDF document text
    • http://wofeginu.rf.gd/que_es_almacenamiento_magnetico_en_informatica.pdfIn PDF document text
    • http://lobakixadob.epizy.com/mustache_template_example_java.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/my_asus_apk.pdfIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_501c333f8fe94063ad3d371d2c15c6c0.pdf?index=trueIn PDF document text
    • http://pimibini.epizy.com/20748813850.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/60806538477.pdfIn PDF document text
    • http://wijobofeforot.epizy.com/easd_treatment_guidelines_for_type_2_diabetes.pdfIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_b05ab83e472144b9a9216ed6a9c8ec59.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zinudipir/python_tkinter_tutorial_w3schools.pdfIn PDF document text
    • https://6e229dea-1f83-4be8-8cd3-388eabd4f5e3.filesusr.com/ugd/1cfe37_02ba817021344e9c853c2b25b03607d3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/41769651970.pdfIn PDF document text
    • http://lurapuven.epizy.com/air_horn_sounds_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/2020_poker_tournaments_las_vegas.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF1 4960 bytes
SHA-256: 1b6c522d60a92156de5013ee8dae19865196134cf38670336d0771c3b2d7acec
font_01_sfnt_off0000fef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF9 10756 bytes
SHA-256: 2977f92412830df3b44eb9aa0341f3ea3b2d6d4cf011dbc716b0c5da710bd8d5

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